You want them to start selling themselves on your product even before you show them the sales page.
Have a scrambled (maybe every character is upside down) web page (sales page) and a pop-up overlay asking them for the “password” to unscramble it. You give them a (big) hint to what the password is. The password itself should be short and easy and should, of course, sell you. A pop up could say:
– “We give you a scientific and easy guide to being thinner. To get the information, please answer the following question.”
– Hint: “Our weight-lose guide is?”
– Answer: either “scientific” or “easy.”