The subject on Deadline L.A. on Sunday (KPFK, 1 p.m.) is the coming grocery wars triggered by Wal-Mart's non-union move into town. The guest is Robert Greene, who wrote about it in the LA Weekly this week. Meanwhile, strike talks continue Saturday.

Larry Mantle also discussed the grocery strike last week on AirTalk with David Greenberg of the Business Journal. Audio here.

Speaking of radio, the new Arbitron ratings remind that with the Southern California audience dispersed among so many stations, even the most popular show draws less than 6% of the radio audience. The shows I tend to listen to on KPCC, KCRW and occasionally KPFK (all FM) get far less, which is humbling. But the next time Rush or John and Ken brag about their huge audiences, remember that, in Southern California, 95% of the audience is tuning them out. And that's on KFI, the clear powerhouse of talk. It's worse for the second-tier talkers like KRLA, though I'm not sure the difference between 95% and 98% is all that significant in the bigger picture.