Spam fighting?

I saw in the referrer log this morning a link to something called Spam Poison. They have a link that you put on your site and it's supposed to confuse the email-gathering spam bots by giving them tons of fake addresses (at least let's hope they're fake otherwise you'll just be screwing random strangers). This seems like an interesting idea, though not a new one - the use of "honey pots" to trap intruders into networks has gone on for some time - but something seems wrong about SpamPoison advertising their site by leaving referrer spam. Doesn't this make them just as bad as the people they're claiming to want to take down? The whole thing just seems very untrustworthy to me and I could find nothing about SpamPoison when I looked at CAUCE and spam.abuse.net, so I'm not inclined to give them the benefit of the doubt.