Brian Sommer points to an acute shortage of three letter acronyms.
That must explain why the social networking crowd has been waiting and calling itself Enterprise 2.0 while it waits for a TLA to spring free.
But wait - let's get some inspiration from the Word of theYear. Let's move to alpha-numeric acronyms as in Y2K.
Y2K? Yes it would be sweet irony to have Gartner reprogram its random TLA generator they have used for so long -)