Be careful what applications you have installed on your cell phone or your computer, and what they're set to do automatically. I've heard that some people's cell phones will automatically upload any photos they take on their phones straight to Facebook. You don't want this.
I heard about a friend of a friend of a friend--a married, church-going woman--who took a very risque picture of herself (one would hope for her husband), only to have her altogetherness appear, unbeknownst to her, on her Facebook page. The friend who spotted it told her about it, but it was on display for the half-hour it took for the woman to get to her computer and delete it.
Not that I expect any of my blogger-buddies to strip for their cell phone cameras, but DON'T LET THIS HAPPEN TO YOU!!!