What Are Some of the Different Approaches to Cross Platform?

In the early days, you're pretty much dealing with two chipsets. And then beyond that, what you're really contending with now is the different operating system implementations on top of that architecture. There are only so many screen sizes there. Ware, only so many sepew speeds, thnre ware,. Only so many this and that. Now you get into all the different form factors that have their own way of doing things - which aren't as unique as maybe they could be.