According to a report from Pew Internet & American Life Project: 74 percent of all U.S. adult population go online. The most commonly-used online social network website is Facebook. 73% of adults have a profile on Facebook, 48% have a profile on MySpace and 14% have a LinkedIn profile. 8% of people who use internet ages 12-17 use Twitter. 75% of teens and 93% of adults ages between 18 and 29 have a cell phone.