Freesound Forums
In an attempt to stop (or at least reduce) spam...
Started August 12th, 2009 · 2 replies · Latest reply by deleted_user_229898 16 years, 7 months ago
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Take a look at http://www.stopforumspam.com/
They have an API you can use to detect if a new member registering is listed as a spammer, using their IP, e-mail and username. It might help 
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