I got the free fractal rendering program, Apophysis, just yesterday (Sept 9) from www.apophysis.org
I've been goofing around with it, read some tutorials, and then proceeded to wander aimlessly until I found things I liked. Luckily fractal art looks cool so it didn't take long!
I'll be comming up with an avatar/icon thing pretty soon, just have to figure out exactly what I want.