Developers Can Now Issue Free "Promotional" Copies of iPhone Apps
macrumors.com
macrumors.com
That's many hundreds over time, which should be plenty for reviews/bloggers/etc.
(Well, it's only $5 right now, but we think it's awesome. ;-)
I would be willing to help implement features that emulate my TI-89. Carrying something that useful in my pocket would be absolutely amazing.
(integration, differentiation, solving systems of equations, polynomials, etc etc etc)
A relatively simple concept, but I think the iPhones user interface could be excellent at it, and I think it could be extremely popular within a niche. There's a lot of scope for features and development, and you could certainly charge more than $5 considering the real cost of a graphics calculator.
It could also be better than current graphics calculators in some ways despite the lack of physical buttons - every graphics calculator I've ever used has seriously struggled with making a decent UI.