Leeloo Chat is a "smart" chat application. People can discuss publicly, register, build a profile, and exchange rich text messages with embedded images. The contact list is "smart" too: when you’re talking with someone, the chat will detect two-way dialogs, and move the relevant persons above the contact list, to allow for quick access to that person's profile and for messaging. You can also that person to your friends. It's evolving daily... Try it :-)