Gulp.

From Radio Advertising Bureau's annual perceptual study (funded by Arbitron): "Compared to other media, spot radio ranked No. 8 and network radio ranked No. 10 in schedule integrity behind magazines, newspapers, network TV, spot TV, outdoor, syndicated TV, cable TV and Internet. Agencies and advertisers also had less confidence in the accuracy and timeliness of radio affidavits to prove ads ran as ordered than in the affidavits from network TV, spot TV and newspapers." [Mediaweek story]