Although almost all parts of your page will be analyzed in some way by the Search Engines, there are a few items to pay close attention to when optimizing your Google Ranking.
Google uses the Title Meta Tag as it spiders your site. Make sure you keywords appear inside this tag. A properly formatted Title Tag will play a vital role in your Google Ranking and SEO strategy. Try not to repeat your keyword more than twice within the Title Tag.
You may also want to add a description tag especially when content is not clear or not available. Although description is not as critical as the Title, if it is missing Google will try and “fill in the blanks”.
Other search engines like Yahoo seem to place a higher priority on Meta Tags as compared to Google. Separate your Meta Keywords with commas. Multiple instances of the same word – as long as it’s in a phrase – are acceptable – just be careful to add them without too much repetition.
When adding content into your pages try to organize each page like your writing a term paper. For example try and place your description keywords into the intro in the top page paragraph. The top of your document is the most important place to introduce your important keywords and phrases. Placing important key phrases in the intro to your document will help reinforce what your page is all about and improve your Google ranking.
Use the middle of you content to outline the meat of what your trying to get across. Use headings carefully. Depending on the length of your document you can use the end of page summarizing what you introduced in the beginning. Although not crucial, it will give you extra opportunity to repeat your keyword introduction.
Google also analyses the keyword density within the entire body of a page. For optimal Google Ranking make sure your keyboards flows through your content naturally. Shoot for a density of about 5-10 percent.
Links play an important role here too! Make sure your keyword are linked both *relevant pages* within your site and to favorite external sites. Google pays special attention from where the link is coming from to where the link goes. So try to make the link follow a path the relates to the rest of the site. This theme rule applies to both outgoing links and interlinking as well.