Image via CrunchBase
Safari already offers an option to remember passwords but does nothing for the problem described. Each iPhone App wants you to create an account with yet another user-name & password. This annoyance is most noticeable once you find yourself restoring the phone to it's original configuration. Few of these accounts do little more than store user-settings in the cloud, from what I can tell. It's not like they ask many personal questions beyond what do you want your user-name & password to be.
I'm not overly concerned with privacy but I know there's been lots of commotion regarding Facebook's overly complex privacy settings. I'm guessing Apple will likely just make it an option to speed up the log-in process on Apps.
NEWS LINKS:
- Pocket-lint - Facebook integration on way with iPhone OS 4.0
- Gizmodo - Facebook Might Be Built Into iPhone OS 4