casmith789 already mentioned it in the
tournament thread, but I think this deserves its own thread. You can
play tiles online! It's not the full featured tiles interface (no mouse, no minimap, no command panels and no icons in menus) but it's fully functional and you can play in a browser. You need a browser which support websockets. Only firefox 4 and chrome do now.
There's also someone who has started working on a different client/server implementation. This is still very early, but there's actually some work being done
<+Grunt> You dereference an invalid pointer! Ouch! That really hurt! The game dies...