Remove deprecated, broken documentation.
diff --git a/content/ads/adserver.txt b/content/ads/adserver.txt
index c1c870e..57686f1 100644
--- a/content/ads/adserver.txt
+++ b/content/ads/adserver.txt
@@ -1,67 +1,10 @@
 NOTE: This method has been replaced by the process documented at https://apachecon.com/event-images/
 
 Apache websites SHOULD include images so that the ConCom or PRC can advertise
-ApacheCon or other events.
+Community Over Code, Apache Roadshows, or other events.
 
-Maybe we'll expand the use of this later after probably a very extensive
-discussion somewhere. For now, we won't.
+The method that used to be documented here has been deprecated. It
+will probably keep working, but as nobody is maintaining it, it will
+probably continue to point to older events. Please use the new method,
+documented at https://apachecon.com/event-images/
 
-Ok, basics.
-
-Button/banner standard sizes:
-
-  468x60  full banner (not yet implemented)
-  234x60  half banner
-  125x125 button
-
-The files (e.g. buttonbar.html) are html fragments to produce a <div> with two
-images below each other inside. You can use CSS to customize appearance.
-
-Howto
------
-
-* Option 1: Use an <iframe>:
-
-  Here is an example for dual button images in a left-hand navigation panel:
-
-<iframe title="Apache Events" src="http://www.apache.org/ads/buttonbar.html"
-    style="border-width:0; float: left" frameborder="0" scrolling="no"
-    width="135" height="265"></iframe>
-
-The style parameter may be adjusted as needed.  The width and height need to be
-exact, so don't forget to sum your margins, padding, borders, etc. for the CSS
-design of the rest of your page.
-
-* Option 2: Use hard-coded plain html fragment:
-
-Some web applications will not be able to use the iframe method, but can
-directly use the html fragment from buttonbar.html for example. However this
-circumvents the adserver, so make sure that you keep up-to-date.
-
-When are these updated
-----------------------
-Should be done by concom only.
-
-When the confirmed dates and locations are known, a standard 125x125 image
-and a 234x60 image are generated and added to the directory ads/ApacheCon/
-See the readme.
-
-Entries are added to the Calendar, e.g. people.apache.org/calendar.html#20075
-
-When the producer-maintained conference websites are ready, the apachecon.com
-re-directs are configured, e.g. apachecon.com/2007/EU/ and eu.apachecon.com etc.
-If a conference site is not yet ready, then refer to the ASF Calendar.
-
-Please do not advertise conferences too far in advance. We need to keep focus
-on the current upcoming conferences.
-
-Updating the banners
---------------------
-Should be done by concom only. Just edit the HTML files. You can test locally
-by saving any website page that has them and replacing the stuff between
-
-  <!-- ads start -->
-
-  <!-- ads end -->
-
-with the new file.