Free is right, you are wrong yoshi.
I downloaded hacks and spectated people for a few hours one day. It's dispicable and nearly undetectable, but there are a few cues you can catch if you yourself have hacks.
Let me lay it out for you: 50% or more use wallhacks.
That's a huge number but it's pretty accurate as far as I can tell. Sometimes it's closer to 70%, sometimes 30%, depends on the server. The problem is, wallhacking is undetectable. It can be totally attributed to "good reflexes" by naive suckers like you.
But like I said, there are cues you can see if you have hacks on. You can see them instinctively aim their crosshairs at people, through walls, before moving them away again in case anyone is spec'ing them. But they follow people through walls by accident. Or, they are walking down a hallway, and suddenly, for no reason, they stop, turn around, and go a different way as soon as they see people through walls that ARE NOT MOVING but they just appeared in sight. Or they always seem to know exactly where people are going to be when they enter a room. For example, in one round, they will check a hiding spot (because they saw someone in it) but the next round they totally ignore it and run right by it.
It becomes very obvious when you spectate people while using hacks... after this experiment I became very disgusted with CS:S and haven't really played it since.
You can tell me I'm wrong, but the fact is that YOU are wrong and the things I have observed CANNOT be chalked up to coincidence.
New! Fun removed by Vinny :[