Well, that's what "Player Customizations" are.  Understand that "hacking" is a benign activity.  It is taking something and modifying or customizing it to do something else, do its job better, or otherwise do neat things.  Examples include:  The Map Pack, HCC, emote packs, and the notorious setscale command.

Hacking is NOT developing cheats, exploits or doing otherwise malicious things.  That is called cracking.  Cracking activity and disclosure of unpatched vulnerabilities and exploits will not be tolerated.

That being said, feel free to discuss any hacks, provided that they abide by the above rule.