Hi.
We've released a new multi protocol IM (along with a few other features) to the public. We're doing all the scripting for the protocols using Lua. Currently we have AIM and ICQ implemented, however we're looking to get Yahoo and MSN implemented as well. Anyone interested in potentially joining our project? All the code will be left open source and you can take full credit for it.
You can download the client currently and within the install directory you will see the LUA script.
http://www.meetro.com