Communication Tube is a multi-network Web messenger supporting Windows Live Messenger, Google Talk, ICQ and IRC.
The biggest advantage of Communication Tube is that it’s completely Web based, no software download is required. It is convenient for people using the internet from internet cafes, school, or work. You can be connected to multiple IM networks simultaneously from its single Web interface. Sending and receiving messages are done without refreshing the page, which minimizes internet traffic and makes manual page refreshing unnecessary.
The service is still relatively new, so it doesn’t have too many flashy features and has a few glitches (eg. it’s showing I have some offline contacts whose display name is 2, 10, or 12). There is a feedback email link at the bottom, so if you can think of ways to improve it, why not let the author know?