Are you a reward zone member? (Score 2, Insightful)

If you have signed up with best buy's reward zone program and have used that credit card at least once with your reward zone card, they will know it is you...even if you didn't flash your reward zone card during the purchase of your blu ray player. Likewise, if you sent a rebate to best buy (although not necessarily to a 3rd party) using that credit card, its likely they will know it is you. Similar things happened with people who bought HD DVD players at best buy...when HD DVD was killed off, best buy decided to send folks $50 gift cards as a 'sorry things didn't work out with HD DVD' gesture...they mostly fed off info they already had from reward zone, rebates, or extended warranties to send the cards out.