I enabled comments (with approval, apparently), and I added smarter rewrite rules so that all of the old links will redirect to normalized urls (because Cool URIs Don't Change).
update: I started to move the comments over from my old blog, but the association with entries is screwed up. I'll have to go through them by hand and move them around. someday...
update2: Well, the comments are in the right places now. That wasn't so bad.