Rounded fractals

International Journal of Computers for Mathematical Learning has a column called "Computational Diversions". Michael Eisenberg recently wrote an article/entry in this column called "Rounded Fractals". The article is both practical and interesting, and it provides several examples concerning the generation of fractal designs. In the beginning of the article, he mentions turtle geometry (Logo), but the examples are made by making use of the method of iterated function systems. The article also contains a challenge, so anyone interested in fractals might want to take a look.