Swoopo seems like an interesting site to play with, the idea of being able to buy a MacBook Pro for $173.40+219*.6=304.80 seems like a very tempting thing to try, but it is a bit like a donkey and carrot. I was watching this last night and see the result, now I didn't buy it, so can't give a real testimonial on these new entertainment shopping sites and there are many, I think the first I heard of was Woot, which I have been going back to from time to time, but Swoopo is much faster and interactive, however it is less educational then Woot. Seems to me that it speaks to the slot machine crowd. Breifly looked at PriceDip, Bidstick (3 free bids), and Pardoo.