Well, do you?

Social-interaction platforms, such as top-ranked MySpace and Facebook, have grown dramatically in recent years, with one out of every four people online now visiting social-networking sites, according to the Consumer Internet Barometer produced by the Conference Board and TNS, MarketingCharts reports.

The Consumer Internet Barometer surveys 10,000 households across the country and tracks who's doing what on the internet.

Some of its current findings:

• About half of social networkers visit social-networks sites on a daily basis - and half of them (or roughly a quarter of all social networkers) say they log on several times a day.
• Among household members, those age 12-17 are more likely than their siblings to be daily users, with 57 percent saying they frequent social networking sites at least once a day.
• Most users - more than three quarters - log onto social networking sites from home, but users also log on at work, school, and public places throughout the day.
• Women are more likely to frequent social networking sites than men; in general, women use the internet more than men for personal communication.

Don Ryan, VP of Technology and Media at TNS, said social networking sites are integral to the new media mix: "As social networking becomes a staple in people's media experience, brands will place it alongside print, TV and search as a main advertising vehicle."

(MarketingCharts provides additional findings.)