No one ever accused Alicia Keys of f***ing around when it comes to philanthropy, and if you ever felt like you wanted to, she’s about to prove you seven shades of wrong. The singer, along with a host of other celebrities, are about to pull the plug on their online selves for charity. Lady Gaga, Justin Timberlake, Ryan Seacrest, Usher and others are among the celebs who are taking part with Keys in a campaign called Digital Life Sacrifice for Key’s charity Keep a Child Alive. The campaign involves basically what it says on the tin – the participants are going to remove themselves from their Twitter and…