FYI, Find Artist returns incorrect results with this style URL: http://fc04.deviantart.net/fs70/f/2011/076/8/e/snufkin_returns_by_dark_persian-d3bvew9.jpg. After you upload you need to change the URL to a http://dark-persian.deviantart.com/art/Snufkin-Returns-201339945 style URL and then do Find Artist to get correct results (and if you get nothing you should make up an artist tag).

forum #57908 has a bookmarklet that makes doing this a little bit easier.

MD5 mismatch of http://orig10.deviantart.net/a7ef/f/2011/315/d/1/snufkin_returns_by_dark_persian-d3bvew9.jpg