Ask me anything, and you will get an answer. Ask about me, ask about something you think I might know, ask... anything. Seriously or otherwise. Whatever you want. You will get an answer. In most cases, that answer will have something to do with the question. In some cases, it may even make sense! (I'll do my best, anyway. Depending on the question.)
You can ask me directly, or, if you've got a quarter handy, you can ask my buddy...
You can ask me directly, or, if you've got a quarter handy, you can ask my buddy...

From:
Re: OT - comment test
But there's also an article which says this:
Which, if I'm reading it, means that it works the way the OID provider in question chooses to make it work.
I think, basically... You have a server which acts as an "identity provider." The URL of that provider is included in the sign-on. The site where you're trying to use OID contacts the provider using the protocol of choice, and the provider verifies that you are logged in with that ID for the current browser session.
The specifics, like I said, seem to vary... and are also more technical than I can really keep up with.