I'm a fan of FB bcos of the creativity and success. I have an account but I only login like once a month or so, really at times when I have nothing to do. Actually its good to see old friends posting on FB which means they are doing great. And also serve an a reminder to me, I have not met some friends for quite some time so perhaps a call is a good idea.
Of course I think everyone got to be careful on their posting/info. Bad intention people are always waiting for a piece of right info for them to strike. Sharing too much is not always a good thing.