The homepage of 419eater.com reads:
Welcome to the world of Scambaiting!
Does somebody want to transfer millions of dollars into your account?
Does someone want you pay you to cash cheques and send them the money?
Met a new friend/penpal on a friendship/dating site who's asking you for money?
Has a dying person contacted you wanting your help to give his money to charity?
Have you sold an item and are asked to accept a payment larger than the item amount?
IT'S A SCAM!
Don't fall for common scams like this - fight them!
So what is scambaiting? Well, put simply, you enter into a dialogue with scammers, simply to waste their time and resources. Whilst you are doing this, you will be helping to keep the scammers away from real potential victims and screwing around with the minds of deserving thieves.
Some enjoyable reads, and a very busy forum. Definitely a site worthy of bookmarking.