I couldn't agree more, perhaps some ski ride-boards (no pun intended) will spring up. Carpooling sure would be a help for lots of skiers and boarders; particulary younger skiers and boarders, some of whom aren't exactly made of money.
You might want to rename that board from the ride board to the carpool board. I've always thought of it as a 'snowboarding' related area and so has a few others. It might make it a bit more clearer.