It's nice, but it doesn't quite "mirror all the content I have" because it doesn't transfer comments. I claim ownership of all comments left by me, and by others, on my content. When a social network deletes a picture of mine, all the comments are lost, as well. This breaks the conversation, and cannot be fixed by simply re-uploading the original content. I understand that you cannot transfer comments from one social network to another, but the basic problem remains. Solve that, and you've got a real winner.
