MTV has hired its first Twitter Jockey, or MTV TJ. Gabi Gregg is the first TJ for MTV. She is being paid a $100,000 salary to tweet at @mtvvj and blog at tj.mtv.com about music news and what it's really like behind the scenes at MTV. MTV ran a contest to find the first Twitter Jockey. You can read about how Gabi was selected here. Gabi Gregg's first high-profile assignment will come September 12 at the 2010 MTV Video Music Awards.