Harry - 4:06 am on May 3, 2012 (gmt 0)

I agree that Twitter is still for the initiated, but email or domains are not open formats ready for APIs the way a Twitter ID is. With my Twitter ID, I can plug into many apps and APIs bringing over all of my basic info as a user, my contact, my history in within another app.

Domain names are far more difficult to obtain and maintain for the average user.