US President Barack Obama’s 2012 campaign has announced that Obama will start tweeting regularly with personal tweets signed "-BO."

The website also said that the President’s re-election staff – Obama for America – would manage his social media accounts on Facebook and Twitter.

A post on 17 June on the website said, "Starting today, you’ll notice something new about President Obama’s Facebook page and his Twitter account, @BarackObama."

"Obama for America staff will now be managing both accounts, posting daily updates from the campaign trail, from Washington, and everywhere in between."

"You’ll be hearing from President Obama regularly, too; on Twitter, tweets from the President will be signed "-BO."

Obama started using social media since 2007, when he used it in his campaign for the presidency.

In April this year, Obama launched his 2012 re-election campaign with social media as well with an exclusive website, and Twitter and Facebook accounts.

Then, Obama told the 7.28 million followers of the @barackobama account on Twitter, "Today, we’re filing papers to launch our 2012 campaign."

"We’re doing this now because the politics we believe in does not start with expensive TV ads or extravaganzas, but with you — with people organising block-by-block, talking to neighbours, co-workers, and friends. And that kind of campaign takes time to build."

Obama hopes to use social media to start big discussions.

He had written on the website, "We’ll start by doing something unprecedented: coordinating millions of one-on-one conversations between supporters across every single state, reconnecting old friends, inspiring new ones to join the cause, and readying ourselves for next year’s fight."

Recently, Obama selected Twitter’s chief Dick Costolo to join his National Security Telecommunications Advisory Committee.