the easier it becomes every year for people to share video over the web, the faster freeskiers are progressing their tricks. period.
25 years ago, you got pushed to improve by the best guy at your hill, or the best guys you were exposed to traveling/competing. now, you can see what anyone in the world is up to, daily... hourly!
so in the sense that NS brings all these like-minded skiers together to share that video and commentary... HUGE influence.