I’ve finally installed the WP-openid plugin. Please email me if there are any problems with it; one hopes it works well at this point.
WP-openid is nominally affiliated with diso. I’m curious to see where else diso goes from here- lots of interesting ideas there, and apparently now some corporate sponsorship, but not a whole lot of code yet. On the ideas side, Steve Ivy of diso did an interview for the autonomo.us group blog.