Obama campaign more active online

Barack Obama's campaign is making better use of the Internet and social media to reach voters than presumptive GOP nominee Mitt Romney, according to a study released Wednesday.

The Pew Research Center's Project for Excellence in Journalism found that Obama's campaign was more active than Romney's and generated more response from users on all major platforms, including

Twitter, Facebook, YouTube and the campaign websites, in the weeks following Romney's clinching of the Republican nomination.

For instance, during the June 4-17 study period, Obama's campaign posted an average of 29 messages per day compared to Romney's average of one, according to Pew. The Obama campaign website and blog were updated an average of eight times a day, twice as often as Romney's, Pew found.