Don't think of this as a url shortener, my use case would be something like pastebin or gist but with free private anonymous pastes. It also took me all of 2 minutes to get a python implementation working with the API. One suggestion, when I look up the codes if I include the 0x eg. "0xDV2HW7" or "0 x DV2HW7" it fails to lookup the code - it wasn't immediately obvious to me to discard the 0x on lookup.