We call them "Web-mercials" for the lack of a better term.
Entering into the world of the Internet or "The Web", there is a tremendous upside when it comes to producing video. There really is no time constriction as there would be on TV. In the Television world, you basically have two choices - 30 seconds and 60 seconds. Of course you could buy time and do an "Infomercial", but that is yet another concept altogether. On the Web, time is on your side.