A Clearinghouse for Linux Market Data?

avdi asks: "Every day we see stories on this site and others about how another movie studio is using Linux for production, another Fortune 500 company has switched to Linux to support their infrastructure, another local or national government has mandated use of Open Source technology, or another major vendor has begun marketing a Linux-based product line. Clearly Linux, Open Source, and Free Software has arrived, and in some areas is marching towards dominance. Yet deep in the beige-walled cubicles of the biggest corporations, where Nobody Ever Got Fired for Buying Microsoft (or Sun, or...) the people who make technology decisions have yet to hear of it. In the land of BigCo, Open Source technologies have an artificially low profile due to the insularity of the corporate culture, the marketing budgets of vendors, and are often viewed as risky, untested curiosities. Is anyone out there gathering all the success stories together in an up-to-date, management-readable format? Is anyone collecting hard data on the number of major companies which have trusted mission-critical systems to Linux, the number of vendors who have invested a significant amount in Open Source-based product lines, the amounts saved by various departments which have migrated from proprietary to Free software? Where does one go when researching data in order to sell management on Linux or some other Free Software solution?"