As for the burglar argument. Well, we were broken into last month. We were in bed. Lights were on, the cars were there. It was also obvious we were at home. However, they wanted DH's car so they deliberately chose to break in when I was there, hoping to get the car keys. As it happens the alarm was set and did go off so they ran off grabbing the nearest keys to them - house keys actually not the car keys they were after
So actually - maybe me advertising that we are not at home might be a good thing! 
but no - the burglar thing is not an issue here. I set my FB to friends only too and I am not searchable, and don;t have my home address on there either.