I do my own log processing using my own self-written analyzer. That means I have to deal with the continual nuisance of referrer spammers. Is there anywhere I can get an up-to-date list of referrer spammers?
It looks like this subject was raised in the blogosphere around 5 years ago, but nothing appears to have come of it. It may well be worth exploring the idea again, but I have no idea if the sheer size of the problem would make it unmanageable.