I know I keep banging on about getting images in the prompts on Skritter, but I really do think this would make a huge difference for learners in the later stages.

Flickr has tons of images that users have permitted to be used according to CC licenses, this url will let you search for them conveniently:

http://www.flickr.com/search/?l=deriv&ct=5&mt=photos&adv=1&w=all&q=search&m=text

Any word from the team on the possibility of users adding images from there? I'm assuming we can at least use them personally if we can't share them?

You can already add images to definitions and mnemonics. Enter img:http://urlhere.com/image.png into the fields and the images will be dynamically loaded. A system where we can share images and have them included with the words from the beginning is on our to do post-iOS.