In what is shaping up to be one of the more effective boycott campaigns in years, advertisers are abandoning the "Glenn Beck" show on Fox News following the host's incendiary comments that President Barack Obama is a "racist" and has a "deep-seated hatred for white people." Among the advertisers to pull spots from the popular cable talk show are Geico, owned by Warren Buffett's Berkshire Hathaway /quotes/comstock/13*!brk.a (BRK .A 99,275, +275.00, +0.28%) /quotes/comstock/13*!brk.b (BRK .B 3,235, +5.20, +0.16%) ; Procter & Gamble /quotes/comstock/13*!pg/quotes/nls/pg (PG 52.49, +0.28, +0.54%) ; Sargento Cheese; and Progressive Insurance /quotes/comstock/13*!pgr/quotes/nls/pgr (PGR 16.01, -0.08, -0.50%) , according...