A recent post on The Federalists Papers blog featured an app available through iTunes. The app allows you to scan products and determine the political contributions of the products' manufacturers (and I also assume the brands' owners, if they vary from the manufacturers).
My key problem with the app is that it breaks down donations by "Republican," "Democrat," and "Others." My reaction? I want to see a version that breaks down donors by "libertarian" and "Other."
And that led me to think: In the final analysis, your political affiliation only really matters on a one-dimensional scale from "libertarian" to "Other." I like political charts that are multidimensional, but when you parse things too far then you miss the forest for the trees.
small "L" libertarian
I know that there are libertarians that are affiliated with the Republican AND Democrat parties, and there are all shades in between "libertarian" and "Other," so the lists above are just maps NOT the terrain.