Advice regarding your kids and social networking:
http://chartiersvalley.patch.com/articles/what-parents-need-to-know-about-facebook
and other safety tips:
http://www.courierpress.com/news/2011/may/28/no-headline—23texting/
when are kids old enough to use social networking:
http://fostercity.patch.com/articles/when-are-kids-old-enough-for-facebook-and-cell-phones