Whenever I want to upload a new picture to any of the social network platform via phone, I find it hard to crop it, adjust the brightness contrast, or add bells & whistles to it. If cropping scaling is not an issue then the other are.
And top of it, it's hard to visit each and every website to update the picture. I would imagine an app which will let you crop your picture, scale it, and do some basic editing and with a single button press it's published everywhere including gravatar, facebook,twitter, linkedin and what not.
We can add / remove these services in the later releases.