I think it's useful - all of these sites fall into the social networking space, but they all have different ways of changing these things (and every site is cha

I think it's useful - all of these sites fall into the social networking space, but they all have different ways of changing these things (and every site is changing them, at that). Next logical step is tapping into API's for settings API's have control over so you can streamline the settings update (obviously that will never be completely possible for usernames/passwords etc - but the more social apps and customizable settings out there the more of a pain point that will become).