Unless I can absolutely tell the source, I won't open an e-mail attachment.

One of these little devils got into "sparky"'s computer a while back and e-mailed all of us on his mailing list. The text said "I'd like your opinion on this".
It didn't "sound" like him, so I didn't open it. Others did, though, and it ran through the group multiplying like rabbits.
It sent bills from his 'puter to people he'd never done work for, etc.

If you can't absolutely be sure who it came from, forget it. Trash it.

Bob, congrats on the new 'puter. Too bad it had to be under those circumstances. (Don't hold your breath for the rebate. You'll turn blue. They're usually very slow to send them)