I never do this, but some things just bother me irrationally. I just sent the following e-mail to an executive at the Discovery Times television channel:
I feel silly taking the time to find your e-mail address on the Internet and write to you, but I just watched the hour-long program on Ronald Reagan's letters on your channel and enjoyed it very much -- but in the middle of the program there was an advertisement regarding "campaign essentials" that referred to John Tyler becoming President after *Benjamin* Harrison died in office. It wasn't Benjamin Harrison -- it was William Henry Harrison. Benjamin Harrison wasn't President until almost 50 years later. Thought you might appreciate knowing that slipped through the cracks.
The New York Times ought to know better -- or at least the people making the house ads for the upcoming programs on a cable channel part-owned by the Times. Not a big deal, but come on, this is 4th grade stuff. I just had to tell someone...! First Jayson Blair, now this...??