I upgraded to the latest WordPress. I’ve checked LiveJournal OpenID login, and it works. However, since some people have complained that they can’t get it to work, I’ve also enabled manual signup.
I also took a look through the available plugins, and found the OpenCalais Archive Tagger. It uses the Reuters OpenCalais project, a database of semantic information, to automatically go back and add relevant tags to all your previous posts. I’m giving it a go, I figure anything that can make it easier to find interesting stuff amongst the 20 years of writing here has to be worthwhile.