Like Eris says, it's not like he doesn't care enough to fix an error like this, but with 23,000 followers on Twitter, he probably has to weed through HUNDREDS of messages telling him about it, so then coming here and finding a whole thread dedicated to reminding him yet again is not likely to brighten his mood.
If nobody else has yet, mention any error in the weekly thread, and that is more than enough to get back to Jeph. Don't Tweet at him, don't PM his box here, don't e-mail him, don't post about it in his LiveJournal. If something doesn't get "fixed" eventually, it either wasn't really an error, or it was an "error", but not something worth the trouble of re-opening the file and diddling with. There is almost zero chance that he hasn't heard about it multiple times already.