As America 's 44th president, it' s not so easy to do for Barack Obama, History. Think of all the original act by an incumbent of the Oval Office - bugging of a political rival, say, or not, because they sexual relations with an intern - and they 've already done.

"It 's only 140 characters," Jack Dorsey, Twitter' s co-founder, recalled Obama as he tapped a tweet. (It was not 't Obama' s first signed tweet - it did last month on Father 's day.)

Dorsey was the moderator of the meeting of three months after Mark Zuckerberg, the founder of the other social media monolith, Facebook, had his moment in the spotlight with Obama.

Obama won a lot of plus points with the Twitterati easy to represent and deal with them and published it on matters relating to the U.S. on a broad economic issues, from the debt ceiling to taxes and education spending.