If this is truly irrelevant to git, then I apologize. I'm posting this link not because I understand all the issues, rather because of a gut feeling that it may (possibly) be relevant to people who are trying to share data across a network:
http://open.itworld.com/4934/051123msrss/page_1.html
This is a typical e-newsletter which may disappear very quickly. The article concerns extensions to RSS being proposed by our friends at M$.
I'm sure I would learn a lot if you code-wizards would explain why this concept would be good (or bad) for git.
Thanks!