Read Write Web reports that between May 2008 and May 2009 the share of 18-24 year-olds has decreased 9% on Facebook.  During that same time, the share of 25-34 year-olds has increased more than 12% while the 35-44 bracket grew 7%.

Social networking on the web started with teenagers sharing music on MySpace, but expect that this trend is here to stay.  Not only is that first generationg growing up and getting jobs, but their parents are also getting connected.