This is my first stab at Firefox extension development, and I welcome contributions to the project from others; just drop me a line if you're interesting in participating in taking this forward.
Hm, this is written in Javascript, right? Maybe we (team klinkr) should team up with you, because we also wrote our client in Javascript. Perhaps we can share...
... our client in Javascript. Perhaps we can share some code =) The Firefox extension itself is a combination of JavaScript and XUL(the "contacts' presences"...