If you want to sell something to anyone, you need to be able to answer the "Why do I need that?" question.
So many people start threads here saying "Call business' in the yellow pages without a website and sell them a cheap website", and admittedly I haven't tried that yet, but I've always wondered - If they haven't got a website yet, surely it must be for a valid reason? Maybe they don't see the value in a website, because let's be frank, a lot of business that many threads here recommend going after would not gain any value by having one.
Unless you are getting them traffic (which is a whole new ballgame if they have no online presence whatsoever), what value are you giving them?
If you call a plumber or cheap hotel without a website and they ask you
"Why do I need a website?"
What would you answer? I'm very interested in this. I feel like I'm missing an obvious answer.