I put my facebook account on hold awhile back; but if I decide to reactivate it and if I'm ever job hunting again during that time, I'll probably either just make a fake facebook account or I'll have two separate accounts: one for inappropriate shenanigans/goofing off with friends... and another for serious business, completely devoid of anything that could possibly be deemed inappropriate.
Although, I kind of doubt it would ever get to that point as I prefer to be my own boss, but I'm curious as to what those of you on HN might have to say about this hack(;))/idea. I'm sure it isn't new.