I've unfriended people on Facebook. I've most assuredly been unfriended on there. Now here's some research on why all this happens.

[youtube http://www.youtube.com/watch?v=jyD_fCVmMwc&w=620&h=315] Ten years ago, no one knew what the concept of "un-friending" someone was, save for possibly not calling them or texting them back. Now it's a fairly common part of the linguistic world in which we live, and it happens quite frequently: some numbers are in the 70s in terms of percentage of…