I'd like this too and might start work on something over the summer. When you say 'my' data I'm assuming you mean 'remains under my control'.
Some of the ideas have been research topics and may ripe for demos later in the year. If you've got s moment, you can check out perscon.net for an overview.
This is exactly what I was talking about. There are a ton of challenges - and obviously this is against what the market/industry is looking to provide (they want to control the service, and see your data as a part of their service)
But we need to move in this direction and have some balance between the user owning their online experience, especially when that experience is an actual extension of who they are - and services that are able to provide portions of that experience in a way where they can be profitable and viable businesses.
Some of the ideas have been research topics and may ripe for demos later in the year. If you've got s moment, you can check out perscon.net for an overview.