Revocable transactions (Score 1)

I hope they implement a system of revokable transactions: parties agree at the time of the deal the price *and for that price* how much of the total transaction is one-time, and how much is revokable, up to a certain date. Then publish the histories and statistics for all parties. This gives you a reputation-based system based on real money that drives lower prices for reputable buyers and sellers: a system of risk sharing that is non-binary. Notice that Google doesn't actually have to take part in the transactions: just be a trusted party for maintaining reputations and using valid data. They better hurry up and patent it before I do :-)