As I said in another thread located around this forum, it would be a better idea to use those programmes. Indeed they allow us to use microphone. Such a Skype for example which is the best programme of this kinds among the many I have found find on the net so far.
Instead of driving into chat rooms in which one can be lost amongst the many who are online and chat with one to another here and there, I would suggest you to set up onto our computers those programmes like Skype and find people who share our same interests and hobbies and start to chat with them, by using a microphone. It's much simplier and it turns us aside from being caught in a mess.
This is my point of view.
Ciao