I just finished upgrading my blog to Movable Type 3.0. So far everything is working fine. But I haven’t upgraded the templates, so nothing looks different yet. My main motivation for doing the upgrade is to get control over the spam comments that are getting posted here every day (for online casinos, penis enlargement pills, etc). If you post a comment, it will now be sent to me for approval before appearing on the site. With any luck the spammers will leave me alone once they notice the change. There are a number of other features that have been added for control of comments, but from what I’ve been reading they’re not totally stable yet, and the TypeKey system is generating some controversy.