As far as I'm concerned, Twitter has wiped out Facebook. I'm done with Facebook.
In 2005, MTV Networks considered buying Facebook for seventy-five million dollars. Yahoo! and Microsoft soon offered much more. Zuckerberg turned them all down.
People sometimes forget how early Flickr came. Facebook didn't add photo sharing till a year after Flickr was acquired by Yahoo.
Facebook, Google, Apple, Yahoo - there's a common theme. None of these companies ever sold. By staying independent, they were able to build a great company.