Understanding Social Media

Before we can become a part of the social media world we need to understand it. 

Part 1
How many friends do you have on Facebook and Twitter?  List your "numbers" on your blog.
Choose two other sites that you want to research or improve your understanding of.
List those sites on your blog.

Part 2
Describe the purpose and most useful parts of the different sites you've listed.  Write the content of your findings on your blogs.