Files to be reviewed

service_keys seem like something that should be defined on a per-addon basis in the addons, rather than in here. I know it would be, shall we say, something of a pain to modify all of those addons right now. However, long-term, it would seem to be a good thing as part of the standard interface to an addon. Otherwise, whenever a new addon is created, we have to modify this.

Right now, I imagine it's much easier to do it this way. Long-term, on the addon seems the proper method.