Nav-system manufacturers know that there are gaping holes in their POI databases, but the data is expensive to collect, maintain, and store, and the more you have, the more processing power you need to sift through it all. That's why Garmin's latest move is brilliant. Instead of trying to cover every possible POI, the company is letting you decide how much information you want, and letting other people gather and sell it. The Garmin device is simply a platform with endless possibilities. Say I'm going on a road trip to Boston--I could purchase Zagat's restaurant and shopping ratings and fetch the best spots for finding picnic grounds from the local Parks Service. Or I could head to online Wi-Fi directory JiWire and download a free POI listing of Wi-Fi hotspots. Even more powerful, there will inevitably be applications that let people create their own POI lists, so, for example, you could send a file with your favorite restaurants and running routes to a friend who's about to visit an area you were in last year.