[Note: Also posted at Squaredpeg.com]
The Pew Internet and American Life Research team has made their most recent research available here (PDF). Read it, chew on it, pass it around the office, and learn from it. It seems nearly every category has risen from the past year, with more and more teenagers using the internet more, blogging more, and creating more content for the web.
[Link:Teens and Social Media (PDF)]