Search Engine Optimization
If you don't know what is it about, i would recommend you to visit Answers definition of SEO.
Designing a Web site so that search engines easily find the pages and index them. The goal is to have your page be in the top 10 results of a search.There are lots of article about SEO and i just read one of it, High Accessibility Is Effective Search Engine Optimization. It's a great article indeed. The article pointed out some of the points stated on W3C Web Content Accessibility Guidelines. It defines further on how to meet those guidelines. I strongly recommend you the article if you're interested in optimising your site to be search-engine friendly.
Besides that, you may have read about Google’s Webmaster Guidelines. It's also an additional article to ponder on.