Two years ago a forum I manage had no spammers.
All we had to do is send an opt-in email confirmation.

Now..we get about 5 accounts a day that register and reply to the confirmation email. I found out that there are some companies that pay real humans to register to forums and message boards pennies per hour. They get an account and start to send spam. They usre normal .com, .net, and .info accounts.

Bots are kind..but now we have to deal with real humans.
I had to turn off the auto-account and now approve the account by hand. I'm looking for the next protection package to roll out.

Goodness...what will be next?