try a blog on a hot niche topic - the adsence down the sides and across the top. If you get your domain name right and your blog content is relevent and updated daily, then you should get good natural traffic from google.

If you can write unique article then you may go to sites sharing revenue like hubpages.com or flixya.com there is alot of them ,, without having any website just write good unique Articles,,
hope it will help