I was thinking that it would be pretty informative to have a plot that shows all the possible links between (major) FF programs, and how it's possible to move miles around between them. Kind of like "six degrees of frequent flier programs". I suspect Starwood would be a very busy hub in such a plot?

If I were more familiar with the various programs out there, I would try to create something like this, but I'm only familiar with UA MP, so I'm not an expert here. Has anyone seen such a plot, or thought about this too?