1) The password on Facebook is never 'seen' on your site. Facebook.com itself takes care of asking the user their password and verifying that it's correct. When they do, they send JFBConnect a notification that the user connected is indeed user 'john' or whoever. On the JFBConnect side, we always know that 'john' is connected to the 'john' Joomla user of your site. Therefore, if their password changes, on either site, it doesn't affect this connection or cause any other problems.
As for the cloud services, I'm not sure how that may be affected, but frankly, it shouldn't. When the user updates their Joomla password, your cloud service should be updated however that's normally done. When they update their Facebook password, you'll never know or care.
2) Nope. Just one. If the "Create New User" setting is set to yes OR no, a Joomla user is created. When it's set to Facebook Only, the type is just slightly different, and can't set their own Joomla password. Other than that, they're treated the exact same as every other Joomla user. In all cases, CB connects to this Joomla user as well... so "john" on Facebook is connected to "john" in Joomla. And "john" in CB is connected to this same user.. so you'd see only one, and they'd be all the same.
Hope that's not too confusing, and hope this answers your question.
If you have any other questions, you know where to find us!
Password synchronization with Facebook
