SEO is short for search engine optimization. While SEO may seem like a simple three letter word, it actually means much more as it is the means by which one increases both the volume and the quality of traffic to a website. Search engines use specific algorithms when searching the web in order to rank websites. The SEO process allows webmasters to optimize their site for the things that search engines look for.
from Internet and Businesses Online: SEO Articles from EzineArticles.com