at the mo i play on a fairly damn good server, ranked 5th in the world(on hlstatsx) for average rank of players, so fairly intense server. there are people who have admitted hacking and say they don't anymore, not hugely convincingly. there are people who are suspected hackers who are just very good at it.
its all a crock, it can take hours or demo'ing certain players to catch them in a point where theres no way they can deny it. you can just happen to be strafing along looking through a wall wiping your hand or something and a demo might show you appearing to track a player through the wall.
the speed hacks are insanely obvious, one quick demo, a minute is all you need grab their steam ID and get them banned by VAC for life. aimbotting, a crap one would just heatshot 15 people in one round and same thing can happen. you can have a aimbot set not to go for headshots though, or turn one on and off to have bad rounds and then it becomes incredibly difficult to prove. same goes for wallhacks, as long as they play normally its incredibly hard to prove. a lot of "top" players preshoot at spots people often camp in, some do it because they have wallhacks. again VERY VERY difficult to prove. i think again its a demo they guys for days, if you run through a door and there are 5 places to hide and the wallhacker chooses the right one more than 50% of the time then they are bullNO SWEARING.
i've only really been playing CS:S like semi seriously, as in often on a good server for a month or two, a week or two here or there over the past few years so i haven't played much. So i do get a lot of , OMG< haxor, NO SWEARING going on, but there are servers where good admins will simply prove you're good and not cheating.
really want to get into a competitive clan now but no idea how to go about getting into a very active clan that doesn't have too many players already.