It's also that I'm going to have to live in this environment. That noisy neighbor? The web site isn't going to tell me about that. It isn't going to tell me about the gang sign on the building across the street (I know, Google Street View). It isn't going to tell me about the feel of the neighborhood - whether, at gut level, I'm going to feel comfortable having my wife and kids live there. There's simply no way I'm going to make a decision about living somewhere without physically going there first. It's not like renting a hotel room for a night.