yeah, but I don't think it's analogous. First, buzz is only useful if your friends are using it too. This isn't true for coupons. Second, there will be a whole lot of non tech savy people that will buy an android phone and click the big icon that says "coupons". I think this is a very different demographic with a much lower barrier for a new user to find it useful.
Should be interesting longterm to see how this coupon craze plays out. My mom figured out Groupon, but has no clue what a smartphone is so Google may be a little ahead of the curve for part of the demographic they are after.
