Pew Internet and American Life Project provided data on what US teenagers typically do on social networking sites.
|Post messages to a friend’s page or wall||84%|
|Send private messages to a friend within the social networking system||82%|
|Post comments to a friend’s blog||76%|
|Send a bulletin or group message to all of your friends||61%|
|Wink, poke, give “e-props” or kudos to your friends||33%|