title: Are there revision control systems for images?
body: <p>I would make crazy use of such a revision control. If it doesn't exist - where would to a good starting point for building one? I can probably make a lot of designs and interaction flows, but to implement it is another thing. </p>
  
  <p>Would it be a good idea start by creating a macro to work with Adobe Photoshop / Illustrator? Or one of the online image editing tools?</p>
  
  <p>Can anyone refer me to anyone working on one of the online image editing tools?</p>