I don't want MY data scattered. By that I mean the core stuff: name, address, etc. Even (especially) my contacts. Sure, some of my preferences can be scattered across the clouds, as it is now-- and it's a total maintenance nightmare. I absolutely hate having so many logins, user names, places to keep up with... grrr...

But let me back up a bit-- I don't mean it necessarily all has to be physically stored in a single location... just give me a management tool that let's me touch it in one place.