Facebook is Your Father's (and Mother's) Social Network

Facebook is Your Father's (and Mother's) Social Network: "Facebook (and other social networks) has been skewing older for a while, but the trend has been 'massive' in the past six months, according to InsideFacebook.com. In the past two months alone the number of new members over 35 has doubled. Marketers take note: the median age is now over 25, and the largest single group 35 to 44.

Women over 55 remain the fastest growing group, and growth among the teen and college-age set has been relatively paltry. In absolute numbers there are now even slightly more members between the ages of 45 and 65 than there are 13-to 17-year-olds."