One of the biggest keys to success in the world of SEO is differentiation. The reason for this is two-fold:
1.Potential linkers are much more likely to give you a link.
It will make a stronger impression on people who visit your site, and is therefore more likely to result in a conversion (i.e., they buy something, fill out a lead form, ask you to contact them, etc.).
The reason these things are true has to do with the intense competitiveness of the environment on the Internet today. Those who understand the basics of how search works are making a lot of money, and more people are investing serious dollars in their Web site marketing strategies. The result: Web sites are getting plentiful in virtually every category and subcategory you can imagine.
See the full story at: http://searchenginewatch.com/3634895