@Grivusangel -- Yeah, it does. It always irritated me when I worked for a steak house when they would come during the lunch rush. No one has *time* to check the frickin' mop water for bleach levels!
Even now, when I see a health rating for a place, I always look at the specifics. There are things you can look for on a report, like how many "critical" items they have, and if you know how to read it, you can nearly always tell if they came in during a rush. I don't get too excited about mop water, personal drinks in the prep area, etc.
There are some things, though, that are dead giveaways to a nasty/badly run place: presence of insects or rodents; food out of temperature; expired food in the fridge/freezer -- that kind of thing. That's when you know a place has real problems.