I'm not naive enough to think that Google is looking out for the little guy in the privacy arena, but I assume this isn't the default (opt-out) behavior. Anyone have an authoritative link on this topic?
No, they don't give any permissions with OpenID. This page lists both OpenID and OAuth-using services. For an example of a service that uses OAuth, try LaTeX Lab (http://docs.latexlab.org/), which uses OAuth to get access to your Google Docs.
