I get the odd spam in my inbox but it mostly works, there is the odd false positive as well, so unfortunately I have to keep checking my Spam folder.
Interestingly, I set up a 'junk' GMail address for usenet posting etc and the address has the word 'spam' in it; despite being used all over the net for a couple of years it hardly gets any spam at all, maybe the spammers filter out addresses with 'spam' etc in them assuming that they are obfuscated?
We all agree on the necessity of compromise. We just can't agree on when it's necessary to compromise. -- Larry Wall