Why do people participate the Groundswell?

There are many reasons people are involved in this movements. People like to keep up with friends, Facebook is the best example of this, people can keep up with friends and let them know what they are doing. Some participate to make new friends, online dating works under this 1 in 5 online singles use online dating sites. Succumbing to social pressure, this is what got me involved on Facebook, but people like friends to do what they do so they send out emails trying to get people to join the site they are using. Some people also spend hundreds of hours on social sites because they think its worth while, Wikipedia is an example of this. Creative people have a need to express themselves, social sites gives them this opportunity to showcase on blogs or youtube. The feedback received is very important for the creative person.