[TheThinkTank] Wiki Spam: Solution?

The Joy of a wiki is that no one needs to log in to make changes, the downside is that no one needs to log in to make changes. Recently on the Bike Collective Wiki people some [insert politically incorrect term] has been messing up the content and adding wiki-spam. Gibberish that helps sites rank and be stumbled on by unsuspecting vicitms. While this is easy to clean up, it is time consuming to keep on monitoring it.

So I propose we mandate a log on for the wiki, anyone can create one, but that will prevent scripts from auto-inserting into the pages. What does everyone think?

http://www.bikecollectives.org/wiki/