What escrow can objetively say if a method is valid or not, if it works or not? He can send something that "can make sense", so he gets paid, and when the buyers tries it, (s)he might find out it's not anything.
It could even be based on a scam site - so even if the buyer "earns" the money, (s)he'll never receive it.
Negative, the escrow will review the method and see if it is working, AKA money will be released once >0.33
BTC have >6 confirmations on my account
