Question about OpenID data policies

Just when I was really starting to enjoy not blogging, I find myself compelled to ramp up the post-o-matic for the new year.
I was just writing a comment on a recent blog entry from Chris Messina and decided to use my OpenID identity attached to this blog (although actually brokered by, which presented me with a choice of profiles to share with Chris’s site, telling me
> A site identifying itself as has asked us for confirmation that is your identity URL.
> The site also asked for additional information. It did not provide a link to the policy on data it collects….
So I figure I ought to notify Chris that his site is not providing such a link to his policy, presuming he has one, and to ask in a general lazyweb sort of way, what the standards are for the inclusion and formatting of such a statement of policy.