Well, it was a little more work than I'd originally anticipated, but 5Valleys is now both my personal OpenID server and a consumer for visitors wishing to use OpenID to identify themselves when posting comments. I used the ruby-openid gem, but otherwise wrote all my own code, trying to stay as RESTful as possible (OpenID itself isn't particularly friendly to REST practices), and getting a thorough understanding of the internals before my presentation at next week's Missoula Web Discussion Group meeting. If you have an OpenID, go ahead and post a comment to try it out. Hint: if you have accounts at any of these sites, then you've got an OpenID you can (hopefully) use here, or anyplace else that proudly accepts them.