How to get 3000 visitors per day?

[frank]

Now my blog is getting around 100 visitors per day. I have some money which I can spend so. How can I get 3000 visitors per day from the search engines? My budget is around $500. I can spend more if I get quality results.

Also don't forget the on-page optimization factors. Building content is one thing and optimizing them according to the search engines is another.