This is not trick question and it is being increasingly asked as public broadcasters grow larger, offer multiple channels, move into cross-media operations, and increasingly commercialize their operations. The Federal Communications Commission will have to consider that question shortly when it considers the effort of WGBH Education Foundation—operator of WGBH-TV, the highly successful Boston-based public service broadcaster—to purchase the commercial radio station WCRB-FM. WGBH is the top ranked member of the Public Broadcasting Service in the New England and produces about one third of PBS’ programming. It operates a second Boston television station, WGBX-TV, and WGBY in Springfield, Massachusetts. In addition it operates FM radio stations WGBH (Boston), WCAI (Woods Hole), WZAI (Brewster), and WNAN (Nantucket) and is a member of National Public Radio and Public Radio International. It operates two commercial subsidiaries involved in music rights and motion picture production. This mo...