Given that this is a social media site, it might be good to know what social media is, and what it can do. Here is an interesting, humorous, but intelligent slide show with a few answers.

What the F**K is Social Media: One Year Later


Thanks to Marta Kagan's slide show for my blog title. P.S. To be able to read all the fine print, click on the "full" option to go full screen.