18-24-Year-Olds on Facebook Report an Average of 649 Friends, Up From 510 Last Year

Roughly two-thirds of Americans aged 12 and older have a social networking profile, up from 62% last year, according to [pdf] a report from Edison Research and Triton Digital. Facebook remains the most popular site, used by 58% of survey respondents of that age, but was the only platform other than MySpace not to see an increase in penetration year-over-year. But, Facebook users report a larger number of Facebook friends this year, and that increase is being driven by its younger users. (more…)