The secret to SEO is only a secret because too many people don't bother to learn the basics -- and the basics WORK!
Consider this information from Google's Webmaster Guidelines:
"Give visitors the information they're looking for. Provide high-quality content on your pages, especially your homepage. This is the single most important thing to do. If your pages contain useful information, their content will attract many visitors and entice webmasters to link to your site. In creating a helpful, information-rich site, write pages that clearly and accurately describe your topic. Think about the words users would type to find your pages and include those words on your site."
No search engine can read your images. Most Flash movies, video or other tool can be understood by the search engines. You have to SAY it for them to INDEX it. If the search engines can't INDEX the text, your visitors can't FIND it and can't READ it.
- Build each page around a short list of search terms that are what the text is about.
- Text content for your page should be readable, understandable and about one topic.
- Write your text for your visitors, not for the search engines.
- Spell Check, Spell Check, Spell Check!
It's not rocket science to have a successful website - it's persistent effort.