Here is a short piece that aired this week on the local ABC station in northern California.
Have a look and think about how you cna make maps for PDF Maps and sell/distribute them direct to mobile devices via the iTunes'like PDF MAps in-app map store.
Avenza Systems Inc.
When Map Quality Matters ®
Cartographic and spatial imaging solutions for Adobe Creative Suite
Mobile mapping solutions for using, selling and distributing maps to mobile devices