Public Figure-Joe Biden

Joe Biden,  is the 47th and current Vice President of United States, jointly elected with President Obama.  He is a member of the Democratic Party and was a United States Senator from Delaware from January 3, 1973, until his resignation on January 15, 2009, following his election to the Vice Presidency. In 2012, Biden was elected on the second term alongside Obama.

source: http://en.wikipedia.org/wiki/Joe_Biden

1. twitter: https://twitter.com/JoeBiden: social media category
2. facebook: https://www.facebook.com/joebiden: social media category
3. youtube vedio: http://www.youtube.com/profile?user=JoeBidendotcom
social media category
4. myspace: https://myspace.com/joebiden, social media category
5. Wikipedia: http://en.wikipedia.org/wiki/Joe_Biden

Among all the web 2.0 application that Mr. Biden is using, twitter is a very popular one. There is 537K followers on this website. Based on the design and images, it appears that the targeted audience for this app. is all the American people who is interested in politics and those who desire to know more about current issue about American Parties.
Based on the research of web 2.0 applications used by Joe Biden, I believe he is effectively using all the application because the information on those sites are updated regularly and design and images of the site fit well into the main character of Joe Biden.