Thanks, folks, for your comments on how you keep up with the social media world—I don't know how you do it! (Though I do know what you mean about needing something to do at work... been there, done that. And yes, I definitely know better than to respond directly to the prolific poster on a class blog, but venting about it just a little on my own blog did help me put it into perspective.)
So, an update on the class blog. First, I discovered I was wrong about the number of people in the class. Turns out there are two sections to the class: One for graduate and one for undergraduate. There are 12 (or now 11—I guess someone dropped) graduate students in the class. When I looked at the undergraduate section, though, I discovered there are 33 people registered there, so with 44 people in the class that explains a little more about why the posts seemed to be ballooning last week as much (and at times as quickly) as they did.
I'm also starting to get a handle on keeping up. Like I said I did the RSS thing, but even with that I'm learning to ignore it so I can get other work done. I'll look at everything from the RSS feeds all at once when I'm ready to do that, skim most and respond to a limited number where I feel like I have something intelligent to say. That tactic should help me keep things down to a dull roar.
Finally, I wrote to the professor today and asked him something related to how he was grading our blog posts and what he expected. He sent me back a very thoughtful response saying I'm doing just fine with the blog and he doesn't expect everyone to spend as much time on the blog as he does, he's just looking for a good "classroom" dialogue about the topics we're covering in the course. I can handle that, particularly since that's how I was approaching it already: Do my posts after I've listened to the week's lectures, read the material, and put together my thoughts about it. So I think I'll do ok.
So that's the status of one class. Maybe next time I'll talk about another class (I have three of them). And on that note, time to turn the computer off to keep me from being distracted while I do some reading for another!