Many people say they don t have time to arrange their keywords carefully and submit their pages to search engines and directories. I posit that it is more important to get your pages listed properly than to create them in the first place. If you write the definitive resource for purple widgets because there is only crummy information available about purple widgets, you have wasted your effort if you don t make sure people can find it. There are two problems with this. First, spiders don t necessarily index all your pages if they do come.
Some spiders only go a couple of levels deep.
Some spiders only index the first 400 pages they find. Some might not ever get to your pages at all. Also spiders are fairly clever but they cannot build an accurate summary of your pages and prepare a brief description of the contents without a little help from the page author. Your page may actually be the best on the Web about that subject but unless the search engine realizes your page is the most relevant, no one will ever know it. Your page should be in the top ten for that subject.