I was just looking over the spam logs and noticed there are 3400 known spammers that have been caught in the spam filters since October. And in reviewing the new user logs, for every one legitimate new user there are 10 known spammers.
Spam must be big business for them to do it on a relatively large scale on a little forum like this. I must be in the wrong line of business.
If the spammers spent 10% of their efforts creating their own forums (or some other websites) instead of spamming, they'd probably make a lot more money.