I’ve whipped together a small experimental piece of web code that you log in to via OpenID/OAuth hybrid protocol using your Google Account (meaning I have no access to your password), and grab URL for an RSS feed. This RSS feed contains your YouTube account’s newest subscribed videos, and links to video files in addition to what Google ordinarily provides: link to video’s web page and link to embedded player. Purpose? Getting subscriptions as a podcast in iTunes or Miro.
However, sadly, this will probably never see the the light of day (and probably I’m not supposed to use it) because of annoying restriction in YouTube API ToS: they don’t access to videos except through embedded player or via their web. This is understandable, for podcasting involves downloading a copy of entire video, and YouTube/Google doesn’t want you to copy the videos (in fact, API specifically prohibits storing the videos, too).
Perhaps they wouldn’t care about my own personal use, but it looks like publicly announcing availability of this small service would not be welcome by Google. Well, something good out of it: at least I now have PHP 5.3 compatible PHP-OpenID library with OAuth extension, and a framework for OpenID-only login.
PS Happy New Year +1 day