2012 GOP presidential hopeful explore digital future, news ways to capitalize on social media

Welcome to The Social Network, presidential campaign edition. Republican Tim Pawlenty disclosed his 2012 presidential aspirations on Facebook. Rival Mitt Romney did it with a tweet. President Barack Obama kicked off his re-election bid with a digital video emailed to the 13 million online backers who helped power his historic campaign in 2008. The candidates and contenders have embraced the Internet to far greater degrees than previous White House campaigns, communicating directly with voters on platforms where they work and play. If Obama’s online army helped define the last campaign and Howard Dean’s Internet fundraising revolutionized the Democratic primary in 2004, next year’s race will be the first to reflect the broad cultural migration to the digital world.