Today we have another one of those reports that tend to drive me crazy. It's from the Bluewolf Group of New York, located just off Madison Square Park, which calls itself "the world's leading provider of professional services for on-demand software applications." But it's not about Software as a Service. Instead it's a statement pulled from a survey of IT salaries that open source developers make more money. This has Matt Asay happier than Tom Cruise on a couch (above), but it's his bosses at Alfresco who are going to have to spread this extra green, and it begs the question, why? Is developing on an open source platform really different from developing on a closed source platform? Are the skills needed...