types of tools that social media offers to businesses and general users

1) "social connection sites" like Facebook and Linked In, allow users to make, share, build, and interact with social contacts online.

2) "social stream of consciousness" sites like Twitter, allow users to share their thoughts quickly and easily (regardless if anyone actually cares).

3) "social bookmarking" sites such as Digg.com and Delicious.com, let users share and rate individual sites and other media.

4) sites like Kongregate.com or games such as Farmville which contain "social features" to link users together.