First, we tagged photos. Now, video tagging, promising to vastly improve video search, is the next big thing. Offerings from ComVu and Motionbox offer a glimpse of what's to come.

Here's a list of articles, videos, websites, and conferences that can help you better understand the issues surrounding the HTML5 Video tag, as well as the HTML5 specification in general.

MetaX, on the other hand, is a meta-data tagging app capable of batch tagging MPEG-4 as well as QuickTime videos. One of the cool things about MetaX is its integration with tagChimp and Amazon.com.