Britney Spears has been doing a flurry of performances of her new hit "Womanizer" recently. Britney performed on ABC's Good Morning America earlier today with a performance themed for her upcoming CD - Circus.I have to say, I'm proud of her for straightening up. I like to be a positive person and always wish the best for everyone, so, Britney, you go girl!What do you guys think of her comeback?