I'm not too worried about being in a group shot with my cohort - but it's always a good reminder to be careful of stuff like that...
And you're right about Facebook stuff biting you on the ass. I had a meeting with the session at my old church to talk about coming under the care of the Presbytery as my schooling was starting up. One of the members went off on me about how mean I am on Facebook. She'd seen some of my interaction with Tim and assumed I was just being vicious to someone. I told her that Tim is my dear friend, that we are competitive teasers - it's a friendly game for us, and that if she could see our conversations via private message she would see warm interactions between dear friends.
There were other very unhappy outcomes to that meeting.
I went home and unfriended all but two of our congregation for self-protection. I consider my friend requests much more carefully now.