Hudson is quite nice, we use it at work. One of the cool things it has is numerous notification plugins for posting build results to Twitter, Jabber or via Email. It even has an IRC bot where you can issue commands via IRC... Does that sound familiar?
So we could conceivably integrate Hudson with ESME and receive notifications or trigger builds all via ESME. How cool is that? And like all cool things, there might be security traps we have to be careful about. Vassil
