This is a great idea, but you would need to either be able to switch chats or possibly be connected to multiple chats at the same time.
e.g. I would like to have a designated chat for danish people. However, I wouldn't want to give up the English chat (in case people write something near me in English, I would want to read that, too).
So either a way to switch between chats or be connected to two or more chats at once (preferably the latter).