I would like the option to select a rectangular area in the image editor, and blur it. This way I could easily blur faces and car license plates when I edit my uploaded photos.
Imgur uses Aviary for the advanced editing. If it doesn't have a blur option then there's nothing I can do :( However, there's a rectangle option, so you could just black it out instead.
Customer support service by UserEcho
There still doesn't appear to be an exact "blur" option, but you are able to use the "Blemish" brush (Edit Image > Advanced > Blemish) for pretty much the same effect.