Web-based chat

I keep forgetting the name of this, so I figured I'd better post it so I can remind myself. Meebo is a website that allows you to sign in to your chat accounts without downloading the chat software. It supports several different chat clients, such as AOL and Yahoo messenger, and it will help those people who absolutely have to contact someone through chat and how come they can't download Yahoo messenger? It's also been suggested for libraries that do chat reference. However, it's blocked by the city, so you'll only be able to access it on public machines.