In reply to london_huddy:
I agree. Particularly is to ensure that the edges are not permitted to rust at all.
When I first learnt to ski in 1957 the skis were wooden. They were stored upright, points up and sole to sole and strapped together with a wooden block in the middle to preserve the curve.
The edges, cable bindings, cable clips, tension lever, and toe and boot sole plates (no release bindings then) were well packed with grease.
Things have moved on since then, I don't think it's essential with modern skis to store them preserving the curve which is permanently built into them during manufacture.
Post edited at 19:22