Replying to Defining "freestyle skiing"

Sup you guys, it's summer, and I am sure a lot of you think of the future ski season... But, meanwhile, some of you could take their time a little to consider the term "freestyle skiing" and try to find it's correct definition. And then, one could send it to wikipedia, the online encyclopedia, and we would thereafter have our sport we love so much explained, described and part of a real encyclopedia, which would make it more credible, authentic or whatever... Go! post your own definition and the best of it could be part of a future, more complete one!