It's happened: America's favorite Tina Fey character - Sarah Palin, former Republican Vice Presidential nominee - has joined Twitter. With the handle AKGovSarahPalin, Palin jumped on the social phenomena the other day and has started posting things like Alaska's swine flu status and her staff being misquoted. Interesting; she always seemed like the more tech-forward of the pair (having been spotted with her PC laptop on vacay) of her and her former running mate, John McCain, but the man who once said he didn't know how to use a computer has been on Twitter for months.