interesting, but I'm not sure of some of the UI decisions. upload file a bit too relevant, easy to confuse with submit, when people is most likely to copy paste. I would have also added at least a 1 week expiration option, and probably set that as a default, though that's very personal, and would have added code coloring as an option in the front page too, though I like the idea of autodetecting by default. short url generation doesn't work here either, chrome in my case. can't write tabs manually in the text area either.