In the world of online business the goal is getting visitors to your site, but more importantly the right visitors. Take the social network sites like MySpace and Facebook for example. They built the site that would attract young college age kids to share and create their own space online. Originally MySpace was developed for unknown bands to create a presence and share their music with new fans. Their content was constantly changing and the customers were driving that change. While these sites were largely grown through word of mouth, most online businesses will need the correct Search Engine Optimization techniques to help you get noticed in the search engines. You need to develop loyal customers that find value in your offerings, and then will come back and tell their friends.