I doubt anyone will signup even if you offer for 0.001 BTC per ad. There is nothing wrong in your site. But practically it wont works. There are many copycats for Million Dollar Home page.
See the following words from wiki page about copycats -
http://en.wikipedia.org/wiki/The_Million_Dollar_Homepage---
The copycats are all competing with each other."[2] He noted that "they have very little ads, therefore I guess it's not going too well for them. The idea only works once and relies on novelty ... any copy-cat sites will only have pure comedy value, whereas mine possibly has a bit of comedy PLUS some actual pull in advertising dollars ... so I say good luck to the imitators!"
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I encourage you to come with some innovation. All the Best !!
