A video scam is spreading across Facebook, pointing to a bait page for online surveys that integrates advertisements delivered through Googles ad service.This could serve as a backup plan, in case the potential victim does not engage in the completion of surveys, in the hope that an ad may be appealing enough for a visitor to click on it.The initial post uses as bait the promise to take the unsuspecting user to a video claiming to reveal nude photos of actress Jennifer Lawrence, followi…