Blind Bitcoin Transfers
A mixing service which is an implementation of David Chaum's blind digital cash scheme.
Client-side cryptography is done in the browser.
This service was first seen in June, 2011.
When transferring funds to the service, a fee is added. Though there was no fee schedule found on the site various amounts were used and the fee appears to be a flat 0.02 BTC per transfer.
- Blind Bitcoin Transfers website