Good eyes Freespirit! Ran into them a couple of weeks ago myself and started to look into them. Found a generating program for forty bucks and started to make my own. I got into them from a book I read, Stephen Wolfram 'A New Kind of Science'
Fractals are so addictive! When I discovered them, I would stay up until 2 a.m. bouncing from site to site through the web ring. I leave for work at 6:30 a.m. and I still couldn't get away from them! In no time, I used up all of the ink in the printer making copies. Showed them to friends and they were blown away. For anybody reading this who is unaware, here's a link: