There's a certain amount of challenge not knowing precise distances to golf tees.  For me it makes golf sporty and fun.  There are serious golfers though who swear by those handheld itellicaddie dedicated GPS devices that include imbedded course maps and descriptions, and that calculate distances to tees and suggest what kind of club to use.  I'd rather guess this stuff, but I'm not a serious golfer.  Anyway, golf is indeed one of those spare-no-expense kinds of sports, and if you're serious enough about it (like I am about snowboarding) you have one of these golf GPS devices.  But, just like P-Nav devices have become victims of mobility, I see the same thing happening to the handheld GPS golf market, marked most recently by KTF's new GPS-based virtual golf caddy application.