At the moment we are avoiding adding this sort of system as we have no way of doing it that guarantees we won't see spam/inappropriate content, you have to remember we don't have 24/7 moderators to keep an eye on a chat system.
If anyone has suggestions then feel free to post.
Windows 7 Pro, Intel i7 3.8 GHz (Passmark: 9021), 16GB DDR3, NVIDIA GTX 780 4GB Superclocked (Passmark: 8056)