compared to hidden rocks, rails do nothing to skis. I ski park all season, then I have some powder days, and I go home with 2 core shots and in need of a shit load of ptex.
rails were the natural progression of freestlye skiing, following the snowboarders who were following the skateboarders. I do find "urban skiing" a little bit ridiculous, but I do it anyway cause its a fun thing to do when theres snow and you cant get to the mountains. I'd like so see more events that make skiers push their boundries in all aspects of skiing, not just double kink rails with insance combo's. Thats why I thouht the K2 back 9 was so cool.