Like most other blogs, we have to deal with comment spam. Tons of it — on the order of 1000s of messages and attempts per day. We have a few anti-spam measures in place, but some still manages to get through, which is frustrating. Our blog isn’t intended to provide scummy comment spammers with space to operate.
To that end, we’re closing comments on older posts. It seems the spammers generally pick up on them rather than new posts, so hopefully by closing them off, we’ll alleviate the bulk of the problem. If you’re a legitimate reader and want to comment on a really old post, send us an email and we’ll sort it out.