Well Connected - The Center For Public Integrity
Bringing the noise, as always, is The Center For Public Integrity, in regards to a free and independent media. They've got a great site devoted to these issues - Open Airwaves. The latest edition has reports on Big Radio Rules In Small Markets, FCC Dawdled As Big Media Grew, and 4 or 5 Big Firms Dominate FCC Commissioners' Home Market, among other things. I encourage you to check them out.