Photowhoa isn't a Smugmug vendor; it's a Groupon-type operation. They are collecting email addresses to add to their "customer base". I removed the referral code, which they would be using to track referrals, but without any (at least acknowledged in their rules) benefit to the referrer. Note - there have been several posts of this contest, and the one consistent point about them is that the posters are under the impression that SmugMug is involved in it in any way, shape or form. The fine print in the contest rules says that except as a prize, they aren't.