A bunch of trolls from a Swedish equivalent of 4chan just pulled one of those "Facebook group pranks" where they set up a seemingly innocent FB group with a noble cause (in this case: "For every member we will donate $1 to Haiti"), then promised that once the group had reached 200,000 members they would reveal their secret sponsor. But of course, when 200,000 members were reached (today), they changed the group info etc so it looked like a disgusting pedophilia group, complete with graphic images, a link to some sort of virus, and so on. Truly vile. (I never joined the group, but at least twenty of my friends did. And yes, people join groups on FB left and right without thinking twice about it, and they should be more careful - but still.)