Thanks for creating this add-on. It made implementing my idea for a website interfacing with Instagram's API a breeze. I would recommend it to anyone looking for a similar solution!
The only thing I find limiting (but it does not have to be for you) is that your a restricted to 20 images to be loaded up at maximum. I would like to see a higher number, but I'm guessing this limitation is set by the API itself.

Anyone wanting to see this in action, check outhttp://www.cropcirclecollector.com... (do note this is a work in progress)