For more interesting facts about the internet, the state of advertising and how people are leveraging the power of social networking sites like Twitter and Facebook, check this video:
This video is part of the popular "Did You Know" series that originally started out as a PowerPoint presentation [Shift Happens} and, after going viral, the presentation was converted into a video by xplane. You can watch all the previous versions of the "Did You Know" series here or download source presentations and high-res videos from the Shift Happens wiki.
Did You Know? Version 3
Did You Know? Version 2
Did You Know? Version 1