Crate in side door is used fairly often, from what I remember, and so are the boxes in B right by tunnels entrance. The latter of which is fairly effective, seeing as CTs are allowed to camp (and therefore are defending that site, duh). Just because they're not used often doesn't mean they're not effective.
Um, if you run from a nade, you take less damage from it. With noblock, you can deal more damage altogether, but less to individual players. In my book, that's less effective; I'd rather deal a 60+ damage to one guy with a nade than see like 5 people get hit for 20. With blocking, you're going to end up dealing a lot of damage to the guy that is getting blocked, and everyone else will take less.
Plus, this is a public server. Communication is so ineffective, I'd be surprised if you can get more than two people simultaneously throwing nades into a spot (only possible exception I can think of is Ts on short -> bombsite A).
Um, AWPs don't matter if you headshot, either. I don't get what you're trying to say with your nade and flash comment.
Right, multi-kills are unlikely. That's what I said. And you agree that with or noblock, it's possible, and doesn't matter. So why did you even bring it up?
Right, I'm aware that it'll stay, that's what I said already. *rolls eyes again*