There is no limit to human creativity. On The Million Dollar Homepage, you pay a dollar per pixel of advertisement, and guess what ? The owner is selling 1 million pixels. So far 240,100 pixels have been sold.
And to prove the first phrase on this post, someone is doing the same thing, but charging 20 cent per pixel, with the following slogan "Why pay five times more?". The owner actually bought some pixels on the million dollar page.