If a friend, acquaintance, relative or neighbor had noticed the writings on Jared Lee Loughner's MySpace page or his videos on YouTube and called them to someone's attention, might this horrible tragedy have been averted?

Can you be Facebook friends with your parents? I say it's not only possible, but that choosing not to is kind of ignorant and childish.

While a social connection on Facebook may be only a click away, cultivating a true friendship is not that easy or straightforward.

Remember the media panic from the summer of 2006 about lonely and isolated Americans? The publication of a sociological study had unleashed a cascade...

People who use Facebook -- or any social-networking site, for that matter -- might actually be happier, healthier, and a lot less stressed than those who don't.

Well, I have to say one thing - HuffPost readers rock! This is one spirited group and thanks to everyone who joined in on the lively debate about "Fac...