Things that should be clear, but aren't. I don't know if its just me or not, but I love Starbucks coffee. I buy it and make it at home. I don't generally get it out all that often, but when I'm and want coffee, that's it, unless there isn't one nearby. So now you can get "stars" aka points, by purchasing their coffee from the grocery store etc., when i think prior to that, it was just purcahses in Sbucks locations.
however, their website says you must register your Sbucks card to get points, and they do use the term rewards. But to me, a reward card is something you show when you shop, for discounts, perks etc. And the Sbucks card, which i finally figured out, is basically a re-loadable gift card you put money on, and use to pay for purchases. But its not clear on their website! I'm reasonably intelligent but it took me longer than normal to figure out what they heck they were talking about!