Not really. Look at shoemoneys implementation eg:
Search Engine Strategies New York City 2007 Pictures - ShoeMoney™
He uses standard WP comment form OR OPENID.
I'm guessing that openID plugins such as this one - VerseLogic » Wordpress OpenID Plugin - are only usefull if you require a registration to comment on your blog? Has anybody gone down the openID route?
Not really. Look at shoemoneys implementation eg:
Search Engine Strategies New York City 2007 Pictures - ShoeMoney™
He uses standard WP comment form OR OPENID.