WWE is cracking down on Twitter accounts that parody their employees according to the Wrestling Globe Newsletter. Many parody accounts have already been shut down. Twitter does allow parody accounts as long as its clearly stated on the account that they are parody and not legitimate.
The two popular parody accounts that remain as Twitter.com/dumbkellykelly and twitter.com/crankyvince. The "Dumb Kelly Kelly" account was recently blocked by the real Kelly Kelly as she was upset with some of the things the account tweeted.