Why aren’t more web videos captioned?

Aaron Barnhart at TVBarn points out that networks (and — ahem — others) should do a better job of providing captions for online video. He makes the case that many already pay to caption video (thanks, FCC) – but don’t pass along the data to their online video streams, even though the FLV format makes that entirely possible. He points to a site from accessibility expert Joe Clark that has links, rants and resources on the topic.