Blogstorm has a interesting article on how people accidently search for URLs. For example, searching for www.google.com instead of typing the URL into their browser's navigation bar. Its an interesting approach and I'm sure it gets traffic but it is from the Get Rich Quick side of the SEO industry.

Real wealth comes from a firmly established domain built on quality content. Using this trick will get you the occasional click of an advert but it won't get you links, it won't get you a readership and it won't get you a good reputation. This is a technique anyone interested in SEO should know about and choose not to use.

Blogstorm: How I use URL Search to get thousands of visitors