I mentioned this in the securities thread, but this, along with CoinJoin and Dark Wallet is what Bitcoin really needs.There are currently people with big influence and ties to Wall Street that are working to make Bitcoin locked down and centralized, with coin blacklisting. Mixing services are how we can protect our privacy.

If you haven't, you need to read what is going on in the private Bitcoin Foundation forums: https://bitcointalk.org/index.php?topic=334520.msg3590446#msg3590446