I know supporting Sweet20 (i.e. D&D), instead of his other games, is probably a low-priority on Clinton's todo list, as he recently wrote:

"This’ll probably surprise people, but I wouldn’t use the Sweet20 XP system in a D&D game ever. I wrote it one afternoon while sitting in a courthouse to testify against a former boss, and just tossed it up on my website because I wrote it, not because it’s good."

    http://sjarvis.com/2005/11/21/101-days-of-dd-reward-systems/#comment-108

Fortunately, many people disagree! I think Sweet20 is admirable and worth maintaining, leveraging that other game's popularity and source material. I have mirrored the original Sweet20 rules on my web site here:

    http://www.lawfulneutral.com/sweet20/xp.html

and I'd like to gradually expand Sweet20 based on further playtesting. If you have any suggestions from your experiences using Sweet20, I would love to hear them: sweet20@lawfulneutral.com.

chris