izzik... that's just standard spammer stuff. Pick a name and add to it. Bill, Billa, Billand, etc.
SBC DSL, which uses Yahoo!, supports those throw-away emails too. But I have to then set up an account (or a forward) to check them also, or hassle w/ the web-view.
W/ Gmail, it all automatically ends up in Outlook via POP3 no matter what I use -- much less hassle.
KVS... thanks for the RFC, but that doesn't explain how a +xxx still gets to me w/o bouncing back to the sender. If + is valid, then name+xxx
could be another valid email and I would never get it. Unless I am missing something...