Lady Gaga is quitting Twitter, but not to worry, her hiatus could be a brief one if just a few of her 7 million followers open up their wallets and donate to a good cause. Called to action by Alicia Keys and her Keep a Child Alive charity, Gaga, the Kardashian sisters, Justin Timberlake and other A-list celebs will quit Twitter and ditch Facebook this Wednesday December 1 in honor of World AIDS Day, returning only after text donations to Keep a Child Alive reach the $1 million mark. This dreaded yet very worthy social media-free time, dubbed the Digital Life.....