I saw a review of SpamSieve in MacWorld and I bought a copy to use with Entourage (it works with any mail client). It is totally my new best friend. I get HUNDREDS of spam emails every day. The first morning after I got it and had "trained" it by selecting previous spam emails and telling it they were spam, I got about 150 emails, the vast majority of which were spam. All but TWO of them ended up in the Junk Mail folder. It's $30 shareware and it's saving me tons of time every day sifting through crap email I don't want. Highly recommended.
