Open source is definately a "good thing". I wrote a research paper on it a while back, so let me know if you want any info, etc.
As for open-source in FIRST, I'm all for it. As most people know, all the stuff I've ever done is available (with source) on my website and I plan on keeping it that way for as long as I can. I would have put my 2003 code up there months ago, but I just finished writing it last Wednesday night in the hotel room before practice rounds on Thurs.
Anyways, as soon as I get the chance, I'll be uploading the new code and some other stuff.
--Rob