2) Your Pages Aren't Cross-Linked. Not all search engine indexers visit your website from your index page. If you haven't linked each of your pages with all your other pages, you stand the risk of having engines indexing only one or two of your pages. Just add text links at the bottom of your pages to all your other pages.
3) Badly Formed Comment Tags If you have comments within your code and they are not formatted according to the html specifications, indexers will not properly parse the tags on your page, ignoring many important tags.
4) Are you using a Virtual Domain Redirection Service? When you use an Internet Redirection Service to make it easy for people to remember your website address, (http://yourname.hjgjhg.com instead of http://www.geocities.com/asjhg/ajkhj/hjh.html for eg.) Your website is displayed in a frame (even though it may not be visible). When you do this, all your pages may not get indexed and most of your keywords and meta tags won't get preference. I suggest you use redirection services only to give people your website address. Give your true (http://www.geocities.com/jfhkha/ksjkjak) url , however long it is, to the Search Engines and to link to your website.
5) Are You Using Free Website Hosting? Many free website hosts use various methods of enforcing their advertising banners on your website. This sometimes causes wrong and/or incomplete indexing of your website. If you have repeatedly had trouble with getting your free website indexed, switch to providers that you see coming up in results at the Search Engines, eg. Geocities, AOL, Icestorm.com etc. Another option is to use the free account your ISP gives you, or use a student account as these are usually very search engine friendly.
I hope this helps in your future marketing decisions.