Make $$$ selling ad space

Do you own a website or a blog? Do you have a decent pagerank? Well then ever thing of selling ad space on your site? It can be a great source of income, The higher your pagerank the more money you will get. For example if you had a Pagerank of 5 you could easy get $100 a month for a text link. And that's just one link you could sell 10 or 20...That'd be $1000 - $2000 a month! that is some great money there for just having a website. The higher your PR the more money you will get it's that simply!