I get the point JerryW is making, but his point is kinda like...well, duh? A customer loyalty program does its duty if it influences a customer to buy at one place over another. He seems to be implying that there's some malicious intent at play on behalf of Best Buy -- they are, after all, in business to make money. An incentive program is meant to do just that -- get people to spend more money, and when they do, to spend it at the particular retailer offering the incentive. I think anybody with half a brain realizes that it's in place to make you want to buy things at Best Buy. Does that mean that it offers zero benefit to those who have a RZ card? Hardly.
I just can't seem to connect the dots on another one of Jerry's points -- from what I'm gathering, he seems to think that the mere fact of having a RZ card so clouds the judgment of prospective shoppers that they get tricked into buying things at Best Buy, or are otherwise unable to comparison shop, and end up getting ripped off. Some specific examples really would help here, as Best Buy has generally developed a good price match policy concerning certain online dealers (to that point, a policy which I very much doubt is sustainable in the long run, but that's a different discussion...), so scoring a price match to, say, Amazon, and still collecting RZ points on top of that doesn't seem like a bad proposition to me. I think you're also underestimating the level of savvy that a growing percentage of shoppers possess. People definitely watch the sales and know what's a "good price" and what's not more than ever before. Consumers have never been at the mercy of retailers less than they are right now. Sure, the certificates are only redeemable at Best Buy, and act a catalyst for the customer returning back to the store for future purchases....but that's kind of another "duh," don't you think? It's the entire point and depending on how you use them, it can very much work out in your favor. What do you expect, an Amex gift card to use anywhere you want? There has to be some incentive built-in for BB. I think it's pretty obvious that BB isn't offering RZ certificates to customers out of sheer goodwill.