I was asked to promote one trusted escrow and here it is:http://safebtc.com/
First of all, there are no transaction fees until November 1st.
It works like usual escrow model. First you setup your transaction with inspection period and with/without charity donation after unsuccesfull transaction. When you get your goods or services, you release the coins to the seller. If the seller rips you off, you don't release the coins and you need to wait for inspection time and after that you can choose to claim seller or not. This way the seller must deliver to get the coins, and the buyer has no incentive to withhold payment since they can't get their coins back.
I have made one transaction and everything was good with it.