Soccernomics Redux: MLS is Starting to Make its Mark

This is an interesting (albeit a bit small and too low rez) graphic by Riley Champine, apparently of the U of O, as shown on the Washington Post site.  It shows how, in a number of ways, how the MLS has grown and is becoming a real major league.  Though it fails to mention the biggest challenge MLS faces: TV ratings.

Looking at the map is it any wonder why the MLS is keen to add franchises in Orlando, Miami and Atlanta?