Today in Tweetbeat: Sarah Palin “learns” “humility” by stumbling on a stage, Katy Perry initiates the Great Katy Perry/ Real Housewives Summit of 2009, John Mayer has a high-tech (and illogical) cheating trick, and Soulja Boy says what now?

The rest is here:
Katy Perry Invites Herself To Real Housewives Dinner; John Mayer Teaches Phone Cheating 101 [Tweetbeat]