Incredibly, I could not find a concise description of how it works which was very frustrating: 1. You want to log to site X. 2. Instead of signing up, you ent

Incredibly, I could not find a concise description of how it works which was very frustrating: 1. You want to log to site X. 2. Instead of signing up, you enter http://myuri http://myuri which has a a text entry that points to site Y as your open id provider. 3. Site X asks you to log into site Y and lets you log in once site X gets an OK from site Y that you've logged in.