The visible text content of your pages is a primary factor that search engines utilize to find, index and deliver your pages to prospective site visitors. …try to integrate search terms into your page copy in a natural fashion so that the terms make sense in context and complement the overall message of the page content.
Effective search engine optimization is not about “tricking” the search engines into ranking your site favorably. Rather, SEO is a research process designed to eliver relevant information to the people seeking that information.
If your organization’s mission has to do with environmental protection, are your target visitors most likely to search for “acid rain”, “save the “greenhouse effect”, or all of the above? Do you want to reach visitors who are local, regional or national in scope? These are considerations that need careful attention as you begin the SEO process.
Flash animation and video may look cool to site visitors, but search engines cannot read or index the content embedded within multimedia objects.That is not to say that you shouldn’t use multimedia where appropriate, but be aware that it is not search engine-friendly. ( SEO - Right video at the right time is priceless )
SEO - Tips for your Website Effectiveness