Love it! Clean, so simple it requires almost no instructions and it JUST WORKS. I also love the fact that I don't have to wait for the current image (or batch) to finish uploading and can immediately drag more files in.

(Actually, that last feature made me feel stupid for a moment: I wondered how images seemed to be uploaded so "instantly" and only after testing it on a large image file did I realise that you're just displaying the local image!)