And then there are those of us with Blackberrys from Verizon. This company decided to deactivate the GPS chipset in my BBery 8830 so that I cannot use third party navigation software. I need to pay $10 a month for their navigation service.

I own a Garmin Nuvi, so there's no way I'm paying for the Verizon service, but there's other GPS based apps for the BBery that would be pretty cool, some that even do mapping against a topo map if you load it in. It would also be nice to have a backup to the Nuvi to use when I'm in our second car, etc.

I spent a fair amount of time a year and a half ago looking for a hack to unlock the chipset, and could not find one. Maybe the state of the art is different now.