Ga-ross! Soon They May Call It OldFacebook

Social networking still remains, primarily, the province of teens and young adults. But a new survey by the Pew Internet & American Life Project finds that use of sites such as Facebook and MySpace among older Americans is accelerating.

From the survey summary:

The share of adult internet users who have a profile on an online social network site has more than quadrupled in the past four years -- from 8% in 2005 to 35% now.

Not surprisingly, however, the percentages drop as we move through the age demographics:

75% of online adults 18-24 have a profile on a social network site

57% of online adults 25-34 have a profile on a social network

30% of online adults 35-44 have a socnet profile

19% of adults 45-54 have a social network profile, while 10% of adults 55-64 and 7% of adults 65 and older have one.

I'm assuming the proportion of drunk/naked pictures tracks with the above data. One can only hope.