Navizon just recently came out with some software for BlackBerry thats trying to emulate the GPS functionality being made popular by the new 8300. Navizon uses cell towers to triangulate your position on a map, which doesnt work so hot if youre on a road trip going through sparsely-techified countryside exactly the case when one might want a roadmap.
BBCool will be sticking to their real GPS for now, thanks.