Make a great forum.
I suggest you build content around great downloads, great open source ware, what service pakc is running on which model, etc.
Everybody could search by their make and model numebr for discussions.
I know I would love to get into a community with about 20 people who own my laptop. I'll never meet them for real, but I bet we have tales of woe and concerns to share as well as tips and tricks.