Seanie, I agree with you on the idea of SEO being the key to success. I just wanted to add that it's been taken for granted intuitively by most of Internet surfers to "Search" for what they want to find on the net.

Don't we all want to be found? Ok, let them search for us!

I'd like to add one important point to all the previous posts: Let's not forget the importance of Off-site optimization. It plays more important role than optimizing on-site factors to get our sites to the top of search engines.