I think the idea of setting up a youtube channel is great. Then you can all just add videos there. Testimonies, advertisements, etc..

Anyway, I think you should stress the possibilities, so those who are pre-ordering the n900 and getting them when they come out (I'll be waiting till my contract with Sprint ends and maybe the n900 will be slightly cheaper next year =P) could record videos from the n900's desktop. Then maybe compare it to the iPhone/Android equivilent.