Best ways to prevent spam on your forum

[leo1977]

Lets make a nice list of best tehniques preventing spam. Thanks

[dseften]

1. Image verification
2. Moderator approval
3. Password protect entry to the site

[curriertech]

1. Image verification
2. Moderator approval
3. Password protect entry to the site
#3 might be a little excessive (but effective, no doubt!)

In addition to the above suggestions...you could Cybernetec's "permissions based on post count" hack so nobody can post images or links until they have x posts, etc.

Also, use email validation during registration - spammers don't use real email addresses so they'll never get validated and thus never get in to spam your site. :)

[Shazz]

Censor, IP ban them ALL!! :)

[kayakbabe]

askimet?

[Brandon Sheley]

add the 3 or 4 spam hacks ;)