Uploading directly from HTML5 canvas to imgur — Jonas Wagner's Blog
http://29a.ch/2011/9/11/uploading-from-html5-canvas-to-imgur-data-uri
For an upcoming canvas project I want to give the users the ability to upload the content of the canvas to an image sharing service. When looking for a suitable API I came across imgur.com the registration was trivial, and they support CORS and base64/dataurl uploads, perfect!