I searched for "alliance algorithm" because I didn't want the threads on algorithms used for robot programming. I would have posted to one of the threads that came up from that search, but the thread was closed.
I also looked under "Rules/Strategy" because I figured that was the logical place for a thread on how alliances are chosen. I didn't think to look under "Championship Event" because allliances are chosen for more than just the championship.
Besides, there's always someone who will point out a new thread belongs somewhere else
and a moderator can always move it.