Another yardstick can be that 20% of your search traffic reach you through your primary theme words. Another 20% through sub theme words & their combos & remaining 60% is fractional. A true pyramid.

Keep keyword density on your pages in between 5-20% while optimizing. The latest talking optimization based on keywords is that almost none of things mentioned above might apply as it is. You create text based on end user perspective & optimize for 5-6 keywords per page. Check your referrer stats & fine tune optimization.

Free Keyword Tools:

The first tool that can be used is Overture.

One trick is to check keywords on all Overture tools, US, UK, DE, FR and even JP. You would be surprised at ideas you can come up with on other O Tools that do not appear on US one. Also, de-pluralizing and match-drive-alphabetization some times does not appear on other tools. Second tool of course is word tracker.

Use Google adwords to check on competition for chosen phrases using CPC barometer. Higher CPC more competition.

Another tool is at:

http://espotting.com/popups/keywordgenbox.asp

Yet another tool is Alta Vista “PRISMA”

One can use Refine search option of Teoma to arrive at more generic/Primary keywords. Another way of doing that could be through DMOZ subcategory study.

Refining of key words can be done using Server side data or referrs log. 7Search.com's Keyword Suggestion Tool http://conversion.7search.com/scripts/advertisertools/keywordsuggestion.aspx

More tools in

url=http://dmoz.org/Computers/Internet/Web_Design_and_Development/Authoring/Online_Tools/Keywords/]listed here[/url.

Once keywords have been finalized lets look at places where we can utilize them.

Alt tag should start with Keyword or Keypharases . Alt text can be used with image or clickable image or text. Alt tag text should be simple ,short, meaningful sentence with target Keyword or Keypharases because it is read by audience.

In case of linked images we can use set of keywords with little description of coming page and border property or attribute should be set to zero (0) and name of images should be relevant which helps to improve validity of web page.

Example : Alt tag text for image without link.

web page. Anchor tag is used to move from one page to another . We use href attribute to specify url of target web page. Anchor link can be created on text as well as on image or picture.

Example :

Page Rank in Search Engine Optimization (SEO)

Google has started to attach lot of importance to anchor text in anchor tags. In fact usage of keyword in anchor tags merits such a high place in google ranking algorithm that a phenomenon called google bombing started.

In this, huge number of people linked to one particular page using a particular text. The text had no relevance to content on that page. However when text that was used as linking text was used as a search query, page that all these tags were pointing to appeared tops.

As an example if everyone links to this page using classical music as hyperlinking text, then this page has a chance of appearing on a top rank for keyword classical music in google.

KEYWORDS and KEYPHRASES usage in Comment Tag :

Keywords and Keyphrases used in Comment tag also contribute in raising page rank by increasing Keyword frequency of web page. We can use targeted Keywords and Keyphrases in comment text instead of simple text to describe page content.

Comment Tag can be used after title , description ,or robot tag in header section. We can use Comment Tag after header if opening body does not contain Keyword Rich Text and before starting of important content like before flash content, programming in javascript, ASP or Applet , images and for those sections we need to identify for easy access.

Although only Inktomi uses this factor to boost page rank but it is advisable to use comment tags with keywords to organize page content which helps in easy editing and review.

Example:

of web page -->