I hate to inject gloom and doom into a fun topic like vanity bitcoin addresses... but y'all should be aware that one of my longer-term goals for the Bitcoin system is to make bitcoin addresses disappear. I hope Bitcoin software 10 years from now tells users "You're about to pay 11 micro-Bitcoins to Amazon.com" and not "2mRwtf8blahblahblah". And I'm not alone, I know Mike Hearn feels strongly about making bitcoin addresses go away for ordinary users.