Somehow I missed this amazing chart that's been floating around for a couple of years now!
It's a visualization of all of the airlines (grouped around the edges by alliance) and the transferable points programs in the middle. Lines connect the various programs so you can quickly see which points can go where.
Somehow this manages to both make my head hurt AND clarify a complex tree all at once.
Here's the master post (scroll down after the click to view)Very cool welltraveledmile.com!
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