Finally, we have a PR winner in one of the worst celebrity charity campaigns ever executed and it’s a billionaire, which must be a big relief to several publicists, since it wasn’t the kids suffering from AIDS or the ego-dying participants for the past week. Pharmaceutical kingpin Stewart Rahr kicked in the remaining $500,000 to Keep a Child Alive, allowing a slew of stars to return to the social networking platforms their fans didn’t seem to give a shit about in the first place.