As a webmaster one thing you should know about is SEO (search engine optimization). As the name suggest its about improving search engine results for you site and its keywords so you pull in more traffic.
Having your site ranked number one in a google search is the aim, as number one positions for google searches normally results in that site getting 80%+ of all traffic searching for that term.
A good starting point on your ever long search to fully understand seo can be found here
http://googlewebmastercentral.blogspot.com/2008/11/googles-seo-starter-guide.html
Its written by google and a major search engine its probably a great way to start.
-Jason














