You can try sending a Private Message or email to the owner (Josh) or his deputy Matt, but they don't always respond. The volunteer admins ("Elves") may be a better bet. There's a "send a PM to the Elves" link in your mailbox.
I made a few updates to http://TrailsNH.com:
- Mapped the WMNF Road Status
- Trail Conditions from AMC Bulletin Board
- Linking to a view feature (maptype, zoom level, and location)
- Mobile version performance improvements