Sharing stuff on Facebook is scary. You could be tracked down and hacked to death by a maniac! That's the message behind several recent apps that use Facebook itself to warn you about the dangers of revealing too much online. A couple of months ago, we saw that weird German campaign that personalized a special Facebook stalker movie starring you. And now here's something similar: Take This Lollipop, an app that asks for permission to access your Facebook data, then shows a very grubby man—played by Bill Oberst Jr.—leering at your online pics. It is a little creepy, but the guy somehow got my location wrong, so apologies to anyone who gets attacked down in Tribeca today. Via Adverblog.