Boy, there must be a writers strike. The late-night ABC news program beat both Leno and Letterman for the second consecutive week. Both talk shows have been in repeats since the WGA strike began six weeks ago. Low ratings mean lower ad revenues, of course, and these are not small numbers: Last year, Leno generated $250 million in ad revenue and $160 million in profits, or about 15 percent of the entire network's bottom line. Here are the latest numbers, according to Nielsen (and Silicon Alley Insider):

ABC “Nightline” 3,910,000

CBS “Late Show” 3,100,000

NBC “Tonight” 3,410,000