[Mediawiki-l] Anti-spam help

[Steven Clift]

E-Democracy.Org is using MediaWiki for various local citizen guides and
non-partisan election information directories:
http://e-democracy.org/wiki

As you can tell we are suffering from spammers.
http://www.e-democracy.org/wiki/Special:Recentchanges

As an all volunteer-based group, we are looking for help to defend our
ability to use MediaWiki. 

What are the main things we need in place to still allow open edits, but
to reduce wiki spam?

Is there any kind of add-on that would require someone to enter a code
from a graphic to save or a way to ban HTML or the hide the crap "div"
code?

Help!

Steven Clift
E-Democracy.Org

Steven Clift - http://publicus.net - Reply to: clift at publicus.net
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E-Democracy: http://e-democracy.org