The folks at SETI@home have put out a desperate plea for the community to bust out those quill pens and start writing strongly-worded letters to congress persons. Apparently the Arecibo Observatory, the world's largest radio telescope and SETI@home's data source, is being threatened with some massive budget cuts. Given that a replacement for Arecibo won't be online until 2020 at best, folks are understandably upset. Turns out Arecibo is also one of the best shots we have at detecting an earth-threatening asteroid before it's too late and we have to sit through another Elijah Wood movie on the subject. You know what you have to do.