are you kidding. so many views, with information on the users, à la facebook. this allows them to serve custom ads, if they decide that it wouldn't halienate their readers too much.
I guess you haven't heard that folks don't like ads? and that big names have been cancelling them, because they're not as effective as folks first thought?
There's more to compel a person to go to Facebook than there is to Reddit. Many Reddit threads are more snark than real conversation. <shrug>