how do one earn by having more traffic to their websites?

It's simple to get traffic for website or blog,You can get in free and paid methods,In free you can get a small amount of traffic,But in paid method you can get more traffic,You can to Blog,forums submissions,directories submissions(like Yahoo directory,Dmoz directory etc) ,answers to real time questions etc...To get more traffic get the Search Engine Visibility (SEO) service at low cost here http://www.tucktail.com/ and it will help to drive more traffic to your own blog,or website...so visitors ratio will increase...you can earn a lot from your site...