As Stiltskin says. I always avoid unless they have a number of good reviews and settled in an area. I also exclude from an AW search.
I suspect that all the 0 feedback pretty young things are at best, bait and switch, and at worst trafficked and run by Romanian gangs with all the horrible connotations that brings up.
If they were avoided en masse then they would simply go away but I don't see that happening anytime soon.
Quite frankly, I don't want to get involved with any of all that.