George alerted me to someone else's million-dollar idea: The Million Dollar Home Page. This Reuters story gives all the details, but the bottom line is that some college student found an easy way to make a million.
21-year old Alex Tew wanted to make money to pay the bills, and decided to create a web page 1000 pixels high and 1000 pixels wide. He then sold advertising space on the page, with each pixel selling for $1. For a spot 10 by 10, you would pay $100 (and there is still space available).
I don't know if readers are flocking to the site, but enough advertisers have that Alex won't be having any trouble paying the tuition.