Hey James, all,
Using the above methods I could get the user, and then offline_access then get and keep their infinite session keys (so you can make calls as publishUserAction when they are offline). I have an iPhone app out that we want to put the user actions, so that their feeds especially useful since there is no live session.
Write up here:
Http://blog.geehsien.com/2009/02/01/getting-offline-access-with-fbprompt-permission/
Thank you
Guy