First I want to thank Steven and the people at Ning for trying to figure out what to do in light of the recent deluge. I'm amazed it hasn't happened before now with the community being so large and wide open. Until they do figure this out, we may just have to become determined not to let the spam-bots disconnect us.
Under the forum list, if we click "View All" -- we can get to the recent discussions that are real and still ongoing. Yes, we'll have to click past a few pages of spam listings until Steve et al can figure out what to do, but we can keep CR2.0 going and refuse to let the spammers cut us off from each other. We also seem to be able to use the blog posts. I'm going to put this message up there as well so it doesn't disappear in a few minutes.
Meanwhile, keep reaching out. This stuff is annoying, but collectively 20,000 teachers have to be smarter and more persistent than a few spammers!