I watermark mine. No real reason-I guess just because most everyone else does. lol. I just put my website address on it. And add the SU thing if I used SU stamps.
I agree about the obnoxious watermarks. If it's covering the middle of the card, what's the point of sharing it?
Wash: "A man walks down the street in that hat, people know he's not afraid of anything."
Jayne: "Da*n straight."
-- my recipes