engine - 4:02 pm on Apr 15, 2010 (gmt 0)
open-sourced their Database
However, I have nowhere near that number of users to worry about. ;)
As far as multiple accounts are concerned, yes, i'm sure there are, but it's still a big number, and growing fast.
I agree, twitter it's not for everyone, in which case, I wonder why some people continue to pour scorn over the service that helps so many. My advice; don't follow people that only talk about their breakfast. ;)