Have YOU sold or bought a website (or more than just one website) at flippa yourself? As far as my experience at flippa/sitepoint marketplace (before flippa exists) i can say that it's all good. There are scammers here and there, fake bids and all, but you can still find some legit buyers/sellers over there. If i'm not selling or buying, i usually take my time to browse around the marketplace and check the selling/buying trend over there. Over time, you know how to differentiate legit sellers from the fake ones. I am more of a seller, but i know a fake seller when i see one on there.