Source :http://news.yahoo.com/blogs/upgrade-your-life/facebook-scam-alert---what-really-happens-when-you--like--150959399.html#more-id
You’ve seen those pictures posted on Facebook “type ‘move’ into the comments and watch what happens” or “If I get a million likes my dad will get me a car.” They seem innocent enough, but they are big business, and you are not doing yourself any favors if you like or comment.