I'm getting to the point where I don't read email or a website that doesn't fit on one screen. If I have to scroll, I assume what's further down isn't of importance. So you ignore it, but keep getting spam. I'm not sure anyone sells a website, per se. They certainly sell products or services.
Simplicity is best.
When I can go on a site, and easily navigate where I want to go, it's just great. I sometimes am asked to be a site or product tester. While I may be above average in my technology knowledge, I'm impatient. If I want to order a product, I don't want to have to fill out all kinds of forms, just hit the button and take my money. If you want to buy, then it should be very quick and easy.