Burst MediaThe amount of time consumers spend on social networking sites is limited when compared with overall time spent on content-related Web sites, according to a new survey from Burst Media.

Research found that while 40 percent of 18-to-34-year-olds spent 11 hours or more every week online, only 3.5 of those hours are spent on social media sites such as Facebook and LinkedIn, according to Burlington, Mass.-based Burst Media, an online media agency.

The survey of 1,900 adults was conducted earlier this month and found that 53 percent of respondents belonged to at least one social networking site.

“There is no denying the fact that social networks are hugely popular, but it is important to recognize that Internet users still spend a significant portion of their time online visiting content sites,” said Chuck Moran, vice president of marketing at Burst Media, in a prepared written statement.