As we noted yesterday, WJMK ditched its oldies format over the weekend. Opinions on the change appear somewhat polarized, with various folks at the Trib, for example, sounding off to entirely different ends. Turns out that Infinity Broadcasting made a simultaneous move in New York, and today's Billboard Radio Monitor has a story about the immediate aftermath in both cities. (See also: this morning's discussion about media consolidation on Eight Forty-Eight.)