Best Buy Rewards - Free to join

Retailers are all demanding "loyalty". I've got something like 15 "loyalty" key tags on my keychain to scan whenever I purchase something at their stores. Most are free, but some are paid "memberships". Best Buy is one of them. To get cash-back gift certificates, you have to buy into their membership. Here's a break - join now and get enough points immediately for a BB Gift Certificate for the purchase price of the membership. Thus, it's essentially free to join and you'll get some savings over the next year if you buy anything from them...