Steven Johnson has a nice quick list of topics we can move beyond when discussing blogs:

1. Mainstream, top-down, professional journalism will continue to play a vital role in covering news events, and in shaping our interpretation of those events, as it should.
5. Blogs -- like all modes of contemporary media -- are not historically unique; they draw upon and resemble a number of past traditions and forms, depending on their focus.

I guess this helps me narrow down my paper topics :)