diff --git a/Allura/allura/lib/repository.py b/Allura/allura/lib/repository.py
index 36eb3d7..24789f9 100644
--- a/Allura/allura/lib/repository.py
+++ b/Allura/allura/lib/repository.py
@@ -129,21 +129,25 @@
         links = []
         if not self.repo.is_empty():
             links.append(SitemapEntry('Browse Commits', c.app.url + 'commit_browser',
-                                      ui_icon=g.icons['browse_commits']))
+                                      ui_icon=g.icons['browse_commits'],
+                                      extra_html_attrs=dict(rel='nofollow')))
         if self.forkable and self.repo.status == 'ready' and not self.repo.is_empty():
             links.append(
-                SitemapEntry('Fork', c.app.url + 'fork', ui_icon=g.icons['fork']))
+                SitemapEntry('Fork', c.app.url + 'fork', ui_icon=g.icons['fork'],
+                             extra_html_attrs=dict(rel='nofollow')))
         merge_request_count = self.repo.merge_requests_by_statuses(
             'open').count()
         if self.forkable:
             links += [
                 SitemapEntry(
                     'Merge Requests', c.app.url + 'merge-requests/',
-                    small=merge_request_count)]
+                    small=merge_request_count,
+                    extra_html_attrs=dict(rel='nofollow'))]
         if self.repo.forks:
             links += [
                 SitemapEntry('Forks', c.app.url + 'forks/',
-                             small=len(self.repo.forks))
+                             small=len(self.repo.forks),
+                             extra_html_attrs=dict(rel='nofollow'))
             ]
 
         has_upstream_repo = False
@@ -170,14 +174,14 @@
                 if getattr(c, 'revision', None):
                     merge_url = merge_url + '?branch=' + h.urlquote(c.revision)
                 links.append(SitemapEntry('Request Merge', merge_url,
-                             ui_icon=g.icons['merge'],
+                             ui_icon=g.icons['merge'], extra_html_attrs=dict(rel='nofollow')
                                           ))
             pending_upstream_merges = self.repo.pending_upstream_merges()
             if pending_upstream_merges:
                 links.append(SitemapEntry(
                     'Pending Merges',
                     self.repo.upstream_repo.name + 'merge-requests/',
-                    small=pending_upstream_merges))
+                    small=pending_upstream_merges, extra_html_attrs=dict(rel='nofollow')))
         ref_url = self.repo.url_for_commit(
             self.default_branch_name, url_type='ref')
         branches = self.repo.get_branches()
@@ -192,17 +196,19 @@
             for branch in branches[:max_branches]:
                 links.append(SitemapEntry(
                     branch.name,
-                    h.urlquote(self.repo.url_for_commit(branch.name) + 'tree/')))
+                    h.urlquote(self.repo.url_for_commit(branch.name) + 'tree/'),
+                    extra_html_attrs=dict(rel='nofollow')))
             if len(branches) > max_branches:
                 links.append(
                     SitemapEntry(
                         'More Branches',
                         ref_url + 'branches/',
+                        extra_html_attrs=dict(rel='nofollow')
                     ))
         elif not self.repo.is_empty():
             # SVN repos, for example, should have a sidebar link to get to the main view
             links.append(
-                SitemapEntry('Browse Files', c.app.url)
+                SitemapEntry('Browse Files', c.app.url, extra_html_attrs=dict(rel='nofollow'))
             )
 
         tags = self.repo.get_tags()
@@ -212,12 +218,14 @@
             for b in tags[:max_tags]:
                 links.append(SitemapEntry(
                     b.name,
-                    h.urlquote(self.repo.url_for_commit(b.name) + 'tree/')))
+                    h.urlquote(self.repo.url_for_commit(b.name) + 'tree/'), 
+                    extra_html_attrs=dict(rel='nofollow')))
             if len(tags) > max_tags:
                 links.append(
                     SitemapEntry(
                         'More Tags',
                         ref_url + 'tags/',
+                        extra_html_attrs=dict(rel='nofollow')
                     ))
         return links
 
diff --git a/Allura/allura/templates/jinja_master/lib.html b/Allura/allura/templates/jinja_master/lib.html
index 250682e..41689b4 100644
--- a/Allura/allura/templates/jinja_master/lib.html
+++ b/Allura/allura/templates/jinja_master/lib.html
@@ -174,10 +174,10 @@
 
 {% macro path_links(parts) %}
   {% if parts != [''] %}
-      <a href="{{'./' + '../' * parts|length }}"><b class="fa fa-folder-open-o" title="Root directory"></b></a> /
+      <a href="{{'./' + '../' * parts|length }}" rel="nofollow"><b class="fa fa-folder-open-o" title="Root directory"></b></a> /
   {% endif %}
   {% for part in parts %}
-    <a href="{{'./' + '../' * loop.revindex0 }}">{{part}}</a> /
+    <a href="{{'./' + '../' * loop.revindex0 }}" rel="nofollow">{{part}}</a> /
   {% endfor %}
 {% endmacro %}
 
diff --git a/Allura/allura/templates/repo/commit.html b/Allura/allura/templates/repo/commit.html
index 7811641..b00b9a7 100644
--- a/Allura/allura/templates/repo/commit.html
+++ b/Allura/allura/templates/repo/commit.html
@@ -27,12 +27,12 @@
 {% endblock %}
 
 {% block header -%}
-Commit <a href="{{commit.url()}}">{{commit.shorthand_id()}}</a> {{commit_labels(commit)}}
+Commit <a href="{{commit.url()}}" rel="nofollow">{{commit.shorthand_id()}}</a> {{commit_labels(commit)}}
 {%- endblock %}
 
 {% block actions %}
 {{ lib.maximize_content_button() }}
-{{ g.icons['history'].render(href='{}log/'.format(commit.url()), show_title=True) }}
+{{ g.icons['history'].render(href='{}log/'.format(commit.url()), show_title=True, rel='nofollow') }}
 {% endblock %}
 
 {% block body_top_js %}
@@ -144,7 +144,7 @@
             <h6>
             {% if type in ('added', 'changed') %}
                 {% set file_url = commit.url() + 'tree/' + h.urlquote(h.really_unicode(file)) %}
-                <a href="{{ file_url }}">{{h.really_unicode(file)}}</a>
+                <a href="{{ file_url }}" rel="nofollow">{{h.really_unicode(file)}}</a>
                 {% if obj_type != 'tree' and is_text %}
                     {% set diff_url = file_url + '?barediff=' + (prev[0]._id if prev else '') %}
                     <a class="commit-diff-link" rel="nofollow" href="{{ diff_url.replace('?barediff=', '?diff=') }}">Diff</a>
@@ -152,12 +152,12 @@
                 {% endif %}
             {% elif type == 'removed' %}
                 {% set file_url = prev[0].url() + 'tree/' + h.urlquote(h.really_unicode(file)) %}
-                <a href="{{ file_url }}">{{h.really_unicode(file)}}</a>
+                <a href="{{ file_url }}" rel="nofollow">{{h.really_unicode(file)}}</a>
             {% elif type in ('copied', 'renamed') %}
-                <a href="{{prev[0].url()}}tree/{{h.urlquote(h.really_unicode(file.old))}}">{{h.really_unicode(file.old)}}</a>
+                <a href="{{prev[0].url()}}tree/{{h.urlquote(h.really_unicode(file.old))}}" rel="nofollow">{{h.really_unicode(file.old)}}</a>
                 to
                 {% set new_file_url = commit.url() + 'tree/' + h.urlquote(h.really_unicode(file.new)) %}
-                <a href="{{ new_file_url }}">{{h.really_unicode(file.new)}}</a>
+                <a href="{{ new_file_url }}" rel="nofollow">{{h.really_unicode(file.new)}}</a>
                 {% if file.ratio != 1 %}
                     {% set diff_url = new_file_url + '?barediff=' + (prev[0]._id if prev else '') + '&prev_file=' + h.urlquote(h.really_unicode(file['old'])) %}
                     <a class="commit-diff-link" rel="nofollow" href="{{ diff_url.replace('?barediff=', '?diff=') }}">Diff</a>
diff --git a/Allura/allura/templates/repo/commit_basic.html b/Allura/allura/templates/repo/commit_basic.html
index c023822..d7db815 100644
--- a/Allura/allura/templates/repo/commit_basic.html
+++ b/Allura/allura/templates/repo/commit_basic.html
@@ -22,28 +22,28 @@
     {% for diff in commit.diffs.added %}
     <tr>
       <td>add</td>
-      <td><a href="{{commit.url()}}tree/{{h.really_unicode(diff)}}">{{h.really_unicode(diff)}}</a></td>
+      <td><a href="{{commit.url()}}tree/{{h.really_unicode(diff)}}" rel="nofollow">{{h.really_unicode(diff)}}</a></td>
     </tr>
     {% endfor %}{% for diff in commit.diffs.removed %}
     <tr>
       <td>remove</td>
-      <td><a href="{{prev[0].url()}}tree/{{h.really_unicode(diff)}}">{{h.really_unicode(diff)}}</a></td>
+      <td><a href="{{prev[0].url()}}tree/{{h.really_unicode(diff)}}" rel="nofollow">{{h.really_unicode(diff)}}</a></td>
     </tr>
     {% endfor %}{% for diff in commit.diffs.changed %}
     <tr>
       <td>change</td>
       <td>
-        <a href="{{commit.url()}}tree/{{h.really_unicode(diff)}}">{{h.really_unicode(diff)}}</a>
-        <a href="{{commit.url()}}tree/{{h.really_unicode(diff)}}?diff={{prev[0]._id}}">(diff)</a>
+        <a href="{{commit.url()}}tree/{{h.really_unicode(diff)}}" rel="nofollow">{{h.really_unicode(diff)}}</a>
+        <a href="{{commit.url()}}tree/{{h.really_unicode(diff)}}?diff={{prev[0]._id}}" rel="nofollow">(diff)</a>
       </td>
     </tr>
     {% endfor %}{% for diff in commit.diffs.copied %}
     <tr>
       <td>copy</td>
       <td>
-        <a href="{{prev[0].url()}}tree/{{h.really_unicode(diff.old)}}">{{h.really_unicode(diff.old)}}</a>
+        <a href="{{prev[0].url()}}tree/{{h.really_unicode(diff.old)}}" rel="nofollow">{{h.really_unicode(diff.old)}}</a>
         <br/>to<br/>
-        <a href="{{commit.url()}}tree/{{h.really_unicode(diff.new)}}">{{h.really_unicode(diff.new)}}</a>
+        <a href="{{commit.url()}}tree/{{h.really_unicode(diff.new)}}" rel="nofollow">{{h.really_unicode(diff.new)}}</a>
       </td>
     </tr>
     {% endfor %}{% for diff in commit.diffs.renamed %}
@@ -54,13 +54,13 @@
         <td>rename</td>
       {% endif %}
       <td>
-        <a href="{{prev[0].url()}}tree/{{h.really_unicode(diff.old)}}">{{h.really_unicode(diff.old)}}</a>
+        <a href="{{prev[0].url()}}tree/{{h.really_unicode(diff.old)}}" rel="nofollow">{{h.really_unicode(diff.old)}}</a>
         <br/>to<br/>
-        <a href="{{commit.url()}}tree/{{h.really_unicode(diff.new)}}">{{h.really_unicode(diff.new)}}</a>
+        <a href="{{commit.url()}}tree/{{h.really_unicode(diff.new)}}" rel="nofollow">{{h.really_unicode(diff.new)}}</a>
       </td>
       <td>
         {% if diff.ratio < 1  %}
-          <a href="{{commit.url()}}tree/{{h.really_unicode(diff.new)}}?diff={{prev[0]._id}}?prev-file={{h.really_unicode(diff.old)}}">(diff)</a>
+          <a href="{{commit.url()}}tree/{{h.really_unicode(diff.new)}}?diff={{prev[0]._id}}?prev-file={{h.really_unicode(diff.old)}}" rel="nofollow">(diff)</a>
         {% endif %}
       </td>  
     </tr>
diff --git a/Allura/allura/templates/repo/diff.html b/Allura/allura/templates/repo/diff.html
index 87ad53b..df74c6c 100644
--- a/Allura/allura/templates/repo/diff.html
+++ b/Allura/allura/templates/repo/diff.html
@@ -26,14 +26,14 @@
 {% endblock %}
 
 {% block header %}Diff of
-<a href="{{b.url()}}">{{b.path()}}</a>
+<a href="{{b.url()}}" rel="nofollow">{{b.path()}}</a>
 {% if a %}
-<a href="{{a.url()}}">{{a.commit.shorthand_id()}}</a>
+<a href="{{a.url()}}" rel="nofollow">{{a.commit.shorthand_id()}}</a>
 {% else %}
 [000000]
 {% endif %}
 ..
-<a href="{{b.url()}}">{{b.commit.shorthand_id()}}</a>
+<a href="{{b.url()}}" rel="nofollow">{{b.commit.shorthand_id()}}</a>
 {% endblock %}
 
 {% block actions %}
diff --git a/Allura/allura/templates/repo/file.html b/Allura/allura/templates/repo/file.html
index 8acb678..42f8bb2 100644
--- a/Allura/allura/templates/repo/file.html
+++ b/Allura/allura/templates/repo/file.html
@@ -27,13 +27,13 @@
 {% endblock %}
 
 {% block header %}
-<a href="{{blob.commit.url()}}">{{blob.commit.shorthand_id()}}</a>:
+<a href="{{blob.commit.url()}}" rel="nofollow">{{blob.commit.shorthand_id()}}</a>:
 {{lib.path_links(blob.path().split('/')[1:-1])}} {{h.really_unicode(blob.name)}}
 {% endblock %}
 
 {% block actions %}
 {{ lib.maximize_content_button() }}
-{{ g.icons['history'].render(href='%slog/?path=%s' % (blob.commit.url(), blob.path()), show_title=True) }}
+{{ g.icons['history'].render(href='%slog/?path=%s' % (blob.commit.url(), blob.path()), show_title=True, rel='nofollow') }}
 {% endblock %}
 
 {% block extra_js %}
diff --git a/Allura/allura/templates/repo/forks.html b/Allura/allura/templates/repo/forks.html
index 089abb9..a55af9c 100644
--- a/Allura/allura/templates/repo/forks.html
+++ b/Allura/allura/templates/repo/forks.html
@@ -25,7 +25,7 @@
 {% block content %}
 <ul>
 {% for link in links %}
-<li><a href="{{link.repo_url}}">{{link.repo}}</a></li>
+<li><a href="{{link.repo_url}}" rel="nofollow">{{link.repo}}</a></li>
 {% endfor %}
 </ul>
 {% endblock %}
diff --git a/Allura/allura/templates/repo/merge_request.html b/Allura/allura/templates/repo/merge_request.html
index a4027d3..61a4de8 100644
--- a/Allura/allura/templates/repo/merge_request.html
+++ b/Allura/allura/templates/repo/merge_request.html
@@ -58,9 +58,9 @@
 
   {% if req.downstream_repo %}
     <p>
-      <a href="{{req.creator_url}}">{{req.creator_name}}</a>
+      <a href="{{req.creator_url}}" rel="nofollow">{{req.creator_name}}</a>
       wants to merge {{h.text.plural(commits|count, 'commit', 'commits')}}
-      from <a href="{{req.downstream_url}}">{{req.downstream_url}}</a>
+      from <a href="{{req.downstream_url}}" rel="nofollow">{{req.downstream_url}}</a>
       to {{ req.target_branch }},
       {{lib.abbr_date(req.mod_date)}}
     </p>
@@ -70,7 +70,7 @@
     {% if error %}
       <div class='grid-19 error'>
         Can't find commits to merge. Please checkout
-        <a href="{{req.downstream_url}}">{{req.downstream_url}}</a>
+        <a href="{{req.downstream_url}}" rel="nofollow">{{req.downstream_url}}</a>
         and follow the instructions to merge manually.
       </div>
     {% endif %}
@@ -145,7 +145,7 @@
   {% else %}
     <p>
       Original repository by
-      <a href="{{req.creator_url}}">{{req.creator_name}}</a>
+      <a href="{{req.creator_url}}" rel="nofollow">{{req.creator_name}}</a>
       is deleted
     </p>
     <div>{{g.markdown.convert(req.description)}}</div>
diff --git a/Allura/allura/templates/repo/merge_requests.html b/Allura/allura/templates/repo/merge_requests.html
index 2d6b8ae..8ca297c 100644
--- a/Allura/allura/templates/repo/merge_requests.html
+++ b/Allura/allura/templates/repo/merge_requests.html
@@ -53,15 +53,15 @@
     <tbody>
       {% for req in requests %}
       <tr>
-        <td><a href="{{req.request_number}}/">{{req.request_number}}</a></td>
-        <td><a href="{{req.request_number}}/">{{req.status}}</a></td>
-        <td><a href="{{req.request_number}}/">{{req.summary}}</a></td>
+        <td><a href="{{req.request_number}}/" rel="nofollow">{{req.request_number}}</a></td>
+        <td><a href="{{req.request_number}}/" rel="nofollow">{{req.status}}</a></td>
+        <td><a href="{{req.request_number}}/" rel="nofollow">{{req.summary}}</a></td>
         <td>{% if req.downstream_repo %}
-          <a href="{{req.downstream_url}}">{{req.downstream_url}}</a>
+          <a href="{{req.downstream_url}}" rel="nofollow">{{req.downstream_url}}</a>
         {% else %}
           <i>(deleted)</i>
         {% endif %}</td>
-        <td><a href="{{req.creator_url}}">{{req.creator_name}}</a></td>
+        <td><a href="{{req.creator_url}}" rel="nofollow">{{req.creator_name}}</a></td>
         <td>{{lib.abbr_date(req.created)}}</td>
         <td>{{lib.abbr_date(req.mod_date)}}</td>
       </tr>
diff --git a/Allura/allura/templates/repo/repo_master.html b/Allura/allura/templates/repo/repo_master.html
index 53e7296..e6f5b3a 100644
--- a/Allura/allura/templates/repo/repo_master.html
+++ b/Allura/allura/templates/repo/repo_master.html
@@ -69,7 +69,7 @@
         $.get('{{repo.url()}}status', function(data) {
             if (data.status === 'ready') {
                 $('.spinner').hide()
-                $('#repo_status h2').html('Repo status: ready. <a href=".">Click here to refresh this page.</a>');
+                $('#repo_status h2').html('Repo status: ready. <a href="." rel="nofollow">Click here to refresh this page.</a>');
             }
             else {
                 $('#repo_status h2 span').html(data.status);
diff --git a/Allura/allura/templates/repo/tags.html b/Allura/allura/templates/repo/tags.html
index 579b294..5ee0578 100644
--- a/Allura/allura/templates/repo/tags.html
+++ b/Allura/allura/templates/repo/tags.html
@@ -31,7 +31,7 @@
 {% block content %}
   <div class="grid-19">
   {% for b in tags %}
-    <a href="{{c.app.repo.url_for_commit(b.name)}}tree/">{{b.name}}</a><br>
+    <a href="{{c.app.repo.url_for_commit(b.name)}}tree/" rel="nofollow">{{b.name}}</a><br>
   {% endfor %}
   </div>
 {% endblock %}
diff --git a/Allura/allura/templates/repo/tarball.html b/Allura/allura/templates/repo/tarball.html
index 55bb3ae..e026b2a 100644
--- a/Allura/allura/templates/repo/tarball.html
+++ b/Allura/allura/templates/repo/tarball.html
@@ -22,7 +22,7 @@
 {% endblock %}
 
 {% block header -%}
-Commit <a href="{{commit.url()}}">{{commit.shorthand_id()}}</a> {{commit_labels(commit)}}
+Commit <a href="{{commit.url()}}" rel="nofollow">{{commit.shorthand_id()}}</a> {{commit_labels(commit)}}
 {%- endblock %}
 
 {% block extra_js %}
diff --git a/Allura/allura/templates/repo/tree.html b/Allura/allura/templates/repo/tree.html
index 391314c..d4cc8d8 100644
--- a/Allura/allura/templates/repo/tree.html
+++ b/Allura/allura/templates/repo/tree.html
@@ -25,7 +25,7 @@
 {% endblock %}
 
 {% block header %}
-Tree <a href="{{commit.url()}}">{{commit.shorthand_id()}}</a> {{commit_labels(commit)}}
+Tree <a href="{{commit.url()}}" rel="nofollow">{{commit.shorthand_id()}}</a> {{commit_labels(commit)}}
 {{lib.path_links(path.strip('/').split('/'))}}
 {% endblock %}
 
@@ -64,7 +64,7 @@
 </form>
 {% endif %}
 
-{{ g.icons['history'].render(href='%slog/?path=%s' % (commit.url(), path), show_title=True) }}
+{{ g.icons['history'].render(href='%slog/?path=%s' % (commit.url(), path), show_title=True, rel='nofollow') }}
 {% if c.user and c.user != c.user.anonymous() %}
   {{c.subscribe_form.display(value=tool_subscribed, action='subscribe', style='icon')}}
 {% endif %}
diff --git a/Allura/allura/templates/widgets/repo/tree_widget.html b/Allura/allura/templates/widgets/repo/tree_widget.html
index 5e75fcb..6645aff 100644
--- a/Allura/allura/templates/widgets/repo/tree_widget.html
+++ b/Allura/allura/templates/widgets/repo/tree_widget.html
@@ -31,7 +31,7 @@
     {% if tree._parent %}
     <tr>
       <td></td>
-      <td><a href="..">[Up one dir]</a></td>
+      <td><a href=".." rel="nofollow">[Up one dir]</a></td>
       <td></td>
       <td></td>
       <td></td>
@@ -53,19 +53,19 @@
         {{ g.icons[icon_name].render(
             href=h.urlquote(dirent.href),
             title=h.really_unicode(dirent.name),
-            show_title=True) }}
+            show_title=True, rel='nofollow') }}
       </td>
       <td class="nowrap">{{lib.abbr_date(dirent.last_commit.date)}}</td>
       <td class="nowrap">
         {% if dirent.last_commit.author_url %}
-          <a href="{{dirent.last_commit.author_url}}">{{lib.email_gravatar(dirent.last_commit.author_email, title=h.really_unicode(dirent.last_commit.author), size=16)}}</a>
-          <a href="{{dirent.last_commit.author_url}}">{{h.really_unicode(dirent.last_commit.author)}}</a>
+          <a href="{{dirent.last_commit.author_url}}" rel="nofollow">{{lib.email_gravatar(dirent.last_commit.author_email, title=h.really_unicode(dirent.last_commit.author), size=16)}}</a>
+          <a href="{{dirent.last_commit.author_url}}" rel="nofollow">{{h.really_unicode(dirent.last_commit.author)}}</a>
         {% else %}
           {{lib.email_gravatar(dirent.last_commit.author_email, title=h.really_unicode(dirent.last_commit.author), size=16)}} {{h.really_unicode(dirent.last_commit.author)}}
         {% endif %}
       </td>
       <td>
-        <a href="{{dirent.last_commit.href}}">
+        <a href="{{dirent.last_commit.href}}" rel="nofollow">
           {{dirent.last_commit.shortlink}}
           {{ h.hide_private_info(dirent.last_commit.summary) }}
         </a>