This reminds me of the method of the three yes. A classic among sellers. In short, lead the client into agreeing at least three time in a row with you before asking what you really want.
I saw it applied in a street by people trying to sell time sharing holidays. 1rst question: "may I ask you a question ?" 2nd question: "Do you like going on holiday in sunny places ?" or if it's on the spot "Are you enjoying your holidays ?" etc. Once the third question is answered, the client is in a positive and confident mood. The more yes you get, the better it is.
After getting and doing a couple small-retail business sites, you'll probably be ready to revert to less effective techniques. They're the most painful and least profitable IMO.
Any other tricks like that to share ?