Do Not Use Frames: There are few worse blocks to search engine indexing than framesets. If your site is using frames and all of your content is found within a frameset then you may need to reconsider a redesign. The ôwhyö of this is simple; the home page actually has no content on it other than meta tags and a title because the page is only there to æcall' the framesets (which are the pages with the content). As a result, the search engines only see a page with a few links on it and some Meta tags; a very poor recipe for search engine placements.
Do Not Create a Site Totally in Flash: Flash is a beautiful medium for advanced and often engaging multimedia BUT, it should not be the sole medium for your web site because the content within flash is not viewable by a search engine. If you wish to use Flash then we recommend interspersing it throughout a web site much like images are. This way you can include the same impressive interaction capabilities and you can still write your content in html; the sole medium that search engines can index. The same rule applies to images; if you want your text to be found and indexed by the search engines then do not include it within a graphic.

Note: Image ALT tags do the job somewhat by providing an ALTernative copy of the text shown in the image, however, this is a poor substitution for true visible text.
Provide Alternative Navigation Options: Most sites employ a graphical navigation method which provides a very attractive and often functional method of navigating a web site. By ALT tagging each of the menu buttons with a topical summary of the destination page, graphical menus can even be effective for search engines. There are, however, a couple of alternative navigational items that we at StepForth recommend; a mirrored text menu at the bottom of the page and a text link to a sitemap located somewhere within every page.
The reason behind the text menu becomes clearer when you understand that hyperlinked text is more credible than a linked graphic. This is because the text within the link can be read and, as with any properly designed navigation, the menu's text link defines the topic of the destined page. Also, since this text is visible to visitors (unlike less visible ALT tags) there is less likelihood that you are trying to fool the search engines. This adds further credibility to the overall topic of the destined page which, in combination with the correctly written content, creates an even better atmosphere for top placements.

The sitemap is useful because of a certain well-known characteristic of search engines; they often take a long time to index pages that are located deep within a web site. So by creating a sitemap (preferably with text links) that is accessible from any page, you provide the search engines with a direct route to every page within your site. Not only do you facilitate a faster crawl of your web site but you provide the search engines with more text links which may further increase the credibility of your content.