Sorry for the delay on getting around to this, but OpenID support is back up on my blog. I downloaded this plugin from the official WordPress plugin repository, which is an update of Will Norris' plugin, which was forked from Alan Castonguay’s abandoned plugin.
At any event, users are encouraged to use OpenID when commenting on my site,
as I take great pains to make sure that the next time you comment, you will bypass my spam filters. If there are any questions, please don't hesitate to place them in the comments below.
UPDATE: In the latest version of this plugin, you can check a box that will enable bypassing spam filters out the gate.