With the Twitter API being down more than up, I implemented a few changes that remove the dependency on the Twitter API. First, I added Summize support. Now, whenever Twitter throws an exception, I poll Summize instead. The downside — Summize does not provide real time statuses, so some of your @replies may not appear on the sign right away. Second I added a “live” textbox that allows you to post messages right from the website (without having to use Twitter at all). Give it a try.
Live Web cam of my LED sign displaying your Twitter @Replies.