I bet I know the answer to this question - I think it's because if a person wants to buy a vehicle(which, coincidentally I myself happen to want to do), they go to the button at the top of the page that says, "Vehicles For Sale". I think half(or maybe really a tenth) the fun is tracking my baby down, that's all lost if I just broadcast my requirements to the world, hit send, and go to sleep. We are hunters man! Let's go get the kill. -Sam