add a warning

diff --git a/doc/plugins/anonok.mdwn b/doc/plugins/anonok.mdwn
index 497ca07c8d0e49a7704459ab6e025a793d980a7c..506657a1c1a16806921b216d842f8bc815adf22c 100644 (file)
--- a/doc/plugins/anonok.mdwn
+++ b/doc/plugins/anonok.mdwn
@@ -5,7 +5,12 @@ By default, anonymous users cannot edit the wiki. This plugin allows
 anonymous web users, who have not signed in, to edit any page in the wiki
 by default.
 
-The plugin also has a configuration setting, `anonok_pagespec`. This
+Please think twice before enabling this plugin. If your wiki is accessible
+to the internet, it *will* be subject to spamming if this plugin is
+enabled. Such spam is not only a pain to deal with, but it bloats the
+revision control history of your wiki.
+
+The plugin has a configuration setting, `anonok_pagespec`. This
 [[ikiwiki/PageSpec]] can be used to allow anonymous editing of matching pages.
 
 If you're using the [[comments]] plugin, you can allow anonymous comments