"Modify the services named based on expected clients. Choose one or more from the following: AOL, BBC, Facebook, Google, IBM, MySpace, Orange, PayPal, VeriSign, LiveJournal, Yandex, Ustream and Yahoo!. "
That's the problem! Most people will look at this and don't know what to do. People hate choice, you generally have to lead them. On the other hand, that you even have to provide such a big list is a flaw in the OpenID spec in my opinion.
Obviously doesn't apply to everyone, but most of the time they don't want to think, they want to use the app.
Perhaps I didn't phrase my comment clearly? I meant that the website creator can pick one or two of the above to feature on the sign-up page. Examples: Aiming at techy 20-somethings? Google's your bet. Professionals? Advertise Linkedin. Users from Russia? Yandex and Livejournal.
Advertise one or two of the most likely sign-in credentials (so people who hate choice have it easy), and then put a small note that others are accepted too (so people who know what's going on aren't locked out).
That's the problem! Most people will look at this and don't know what to do. People hate choice, you generally have to lead them. On the other hand, that you even have to provide such a big list is a flaw in the OpenID spec in my opinion.
Obviously doesn't apply to everyone, but most of the time they don't want to think, they want to use the app.