I originally thought the same, but you should remember that they've developed this a wee bit differently than other models. It's based on friendships (Facebook

I originally thought the same, but you should remember that they've developed this a wee bit differently than other models. It's based on friendships (Facebook after all) and Facebook credits. So I'm guessing that if suddenly all my friends were going to X on Y and I see that, I can say to myself, "hmm, I feel like catching up with some friends, all I need to do is go to X on Y too...". Groupon, you show the link to a friend and they go, "Yay, cheap food!" or you can go, "hey friend! let's get more friends and go hang here!! cheap food!!" but I'm guessing Facebook will take out all of that "tedious" planning stuff, so it's very streamlined - i.e. if more than X friends are going to Y you'll be pestered via your Wall until you click "buy" or whatever it'll be.