I've stopped using + addressing because it's been more trouble than it's worth. It's supported in gmail, and: Gmail's anti-spam catches basically all my spam,

I've stopped using + addressing because it's been more trouble than it's worth. It's supported in gmail, and: Gmail's anti-spam catches basically all my spam, a surprising number of places don't support + extensions (the Dell support guy told me "I can't put in a +, I'll just remove the "+dell" at the end of your address), and also a surprising number of places freak out at these addresses ("Why does your e-mail address contain MY company name?"). I used to do it all the time, but with "-" instead of "+". It was quite effective when I was running my own mail server and despite my best attempts, spam was quite a problem. I had anti-spam set up (greylist, spamassassin, RBLs, my own custom blacklists). I'd get a dozen or more spams a day anyway.