Would you pick up a forum member if your co-driver backed out?

I'm just curious to see how many people would pick up an unknown person to be their co-driver/navigator? Thats a lot of trust to put in a person to drive your car/figure out where to go. I may do it, if my co driver backs out, but I don't see that happening. I think it would get a bit strange after a few days, being stuck with a person who you only know from the internet.