We've just subjected this server to a major upgrade, and brought in an expert to troubleshoot the blog comment system. Upshot: we're re-enabling comments on articles here. You will need to log in and give a name in order to leave a comment — but you can either use your existing username/ID from some other system (such as Typepad or Livejournal), or create a throwaway username for use on this site. You may notice one or two other changes ... feel free to talk about them in the comments under this entry.
While I'm at the microphone: I'm going to be appearing in London this Friday evening, as part of a group signing that my publisher Orbit has arranged with Forbidden Planet, at the MegaStore on Shaftesbury Avenue from 6pm. Also signing will be Mike Cobley, Kate Griffin, and Benedict Jacka ... see you there!