The wikipedia (http://www.wikipedia.com) is an interesting example of 
this. They seem to have a constant battle against spammers/vandals and 
have a mechamism/process in place.

paul vudmaska wrote:

>Carsten Eckelmann <careck / circle42.com> wrote in message news:<40A7F177.8050400 / circle42.com>...
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>>Hi everybody,
>>
>>i just had a look at some pages in the Rubygarden wiki and saw that 
>>someone has inserted large amounts of spam links into the pages. Please 
>>all have a search for 'disney' and see for yourself. I will start delete 
>>some of the stuff, but don't have time to do it all.
>>
>>BTW: this shows the beauty of wikis, that even though they are open to 
>>the public and event though bad people can corrupt them easily, it is 
>>always save to undo these things.
>>
>>Cheers,
>>Carsten.
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>>
>Perhaps some additonal wiki smarts would stop some of that. Assuming
>the ip of the spammer is taken, in addition to the rollback of the
>changes i suggest an option that says, 'i think this is spam' be
>available. When x many people complain of a certain ip, that ip should
>be bannded from further changes.
>
>Of course that assumes the sob does not change ip periodically.
>
>:paul
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