Hey look, two rants in one day. Lucky you.
I am constantly amazed at the lack of tack and privacy on facebook. Can't anything stay off? Do you really have to tell the entire world when you're invited to something, etc.? Constantly, I see people posting a lot of stuff that is certainly sensitive material. Seriously, think before you post something. Use your brains, and think about whether it could hurt or affect somebody who might not share your joy. If you're old enough to use facebook, you're old enough to have tact.
I'm having a nice day, hope you are. :)