Earlier I gave an example of GREAT map from the New York Times (here). Here is a lousy map from Semetric (who lauds their data-driven business).
The problem with this map (from their PDR report - here), which tracks music downloads is two-fold. First, the basic message is "what is this map saying"? This is total music downloads, but the story is about illegal music downloads and they aren't broken out.
Second, in case you haven't noticed Alaska isn't part of the USA. And Yukon, the Northwest Territories, Nunavut and Vancouver Island are not considered part of Canada.
That is a crap map for someone selling data.