I totally meant to post this yesterday...
Anyway, anyone who's still stuck up on the project for this week, I'm going to recommend checking out LiveJournal. This is a site full of blogs on any topic you can possibly imagine. There are tons of communities, which you can search through, and these communities will have links to all of their members' blogs, which already has you on a second teir. The member blogs might not necessarily be about your chosen topic, but communities will also link to other related communities, and it's just a very accessable, navigable network.
Hope that helps some of you out if you're finishing this up at the last minute.