The 'W' in Social Media

I realize that most U.S. citizens have some interaction with social media, but who new the leader (or past leader) of the free world was taking advantage of this platform?

In searching for some information on President Bush's recent book release, I ran across some interesting info--he's using social media! I'll admit it, I was intrigued to learn W. actually has a Facebook page and Twitter that are updated quite frequently.  Yes, his aides may me doing the leg work, but I am fascinated by the number of president's that use social media to relay causes, information about speaking engagements, and platforms such as the Clinton-Bush Haiti foundation.

Although we are aware that social media played a large role in the 2008 election, Obama has since ceased using the social media for an 'insider's perspective.'  Because so many supporters followed Obama for that reason, he has acually been considered to be on a social media backslide due to his updates only concerning what any citizen can read online or in the newspaper.  What do you think about Obama's change in social  media policy?  Do you think a current president should use social media platforms to communicate with citizens?

I understand that some would argue that President Bush is merely using Twitter and Facebook to promote his recent book release, but is that not what Obama did to 'boost' his connection with the online world during the '08 election?  It will be interesting to see of Bush's activity will decrease as we get further from the interviews and book reviews.

What president in history do you wish had social media and why? Abraham Lincoln? Thomas Jefferson?  Ronald Reagan?

What do you think they would Tweet or blog about?