It looks like someone created an account named "Mark Suckerberg" and automated a posting flood repeating the text "I accidentally.. the whole economy".
Also, said account's avatar looks like some kinda of three-way orgy. Not investigating that image farther...
...And that just happened to be the account you log in as. Changed the name and image. I'm sure someone will change it back.
I've gotten in and things are loading, but slow.
That the thing is still running at all seems nice given the ass-kicking I suspect their servers are likely receiving.