A Anonymous bitcoin-based secure escrow service.
Site has many negative ratings and has been offline as of recently
Warning: Please be careful with your money. When sending money to an escrow partner you are trusting that the operator will not abscond with your funds and that the operator maintains secure systems that protect against theft -- internal or external. It is recommended that you obtain the real-world identity of the operator and ensure that sufficient recourse is available.
Exchanging or storing significant amounts of funds others is not recommended.
Essentially, Funds are held by the escrow service until the payment sender releases the funds to the payment recipient, after receive the item or service.
This service is provided by a real company based in Hong Kong and is anonymous because does not save logs of IP.