Hi, I made this in my free time because there wasn't really anything that let me delegate tweeting access without all the other junk to people. I envisioned it as something quick and handy for accepting submissions, etc.
Hopefully you don't suffer the same fate, but Twitter's API policies just aren't friendly for fun little projects like these :/
At any rate, developers, developers, developers! :) I love our people :)
could be useful for companies (like the one I work at) for employees to tweet via the company official account which is handled by marketing. (If you don't already), you may want a review panel for outgoing tweets, for which (I think) you can charge.