Ouch! Personally I try to keep speeds to the 40s now. Worst thing I ever did was start using those run tracking apps which conveniently also give you your speed. Got in a competition with a friend on the other coast and was regularly hitting 55+ on runs that a wipe out could easily end in the trees. What stopped me was when a late teen girl did just that and died going at far slower speeds.

(sorry the late reply, been away)

What I like about snowboarding is it feels fast, even when you're going not-that-fast (at least in my case). I once had a friend video me coming down the hill, and when I watched the video, I thought: wow, I thought I was going much faster than that!