Full Circle Associates

Lee at Common Craft just posted a thoughtful piece on the difference between message boards and weblogs. I had the chance to see his draft and really appreciate the distinctions (and similarities) he is trying to articulate. As I reread the final post tonight, I'm more strongly hit by the coming convergence of these forms. Perhaps in a year, we will have new hybrids and combinations. Here is a snippet:

Worlds are colliding, people. Your friendly neighborhood message board is not alone in the online community world any longer...

...in the last few years, we’ve seen the arrival of a new set of tools and processes that offer additional opportunities for message board-based online communities. The appearance of weblogs have left many observers, including me, wondering about the differences between the two technologies and how they will be used inside online communities.

Are weblogs really that different from message boards? How?