On the theme of “Blogging Events”,  we have:

Weinberger with several articles (starting here and working their way forward in time,  or to the link to the right of “Back to Blog”  on the JOHO blog)  that are Blogs straight
from the Emerging Technologies conference hosted by O’reilly.  There were several bloggers blogging the conference,  many of the conferences covering various aspects of blogging,  so one could say that there were many instances of Bloggers blogging the ETech coverage of Blogging..