Protip: Don't put all caps posts with loads of !'s. Anywho, afaik users can't even use (The website isn't even online and I don't think it's available for Beta) MCCheat and the detection on that plugin was terrible anyway (Was kicking every person who joined my server :/). Though it would be nice to see a plugin that could detect people using cheats, I highly doubt it's possible, not in a way that doesn't provide many false-positives anyway.
the only way i can think of not allowing a person to cheat without modifying the client is make a client wrapper that sends the minecraft.jar to the server that then verifies it and allows that IP address to connect i have thought about, but in the end i don't care enough to implement it as anyone joining servers would need to run this which is a big turn off to most players (legit and people playing with hacked clients)
This thing has a lot of false positives, and depends on things that have been fixed in Minecraft. For example inventory is now all server side, so this client issue it uses to detect will not work.. Its pretty useless from the look of it.
