Keyword focus 

is the heart of your web site. Choose the wrong focus and you either get the wrong traffic or no traffic. Consider your target audience and compitition.

Locality

Seems rather simple use your keywords and include locational names to get found. Not that simple though. If you have a high level compititor in your chosen market your efforts could be wasted. Use Google to your advantage. Search using your keywords and location in Google and see what your compitition is. Then after you adjust your site revisit Google and see where you end up. If it doesn’t bring you to the top consider a different approach.  Changes may take a day or two to show up so don’t panic that you adjustments didn’t work.

There are free tools like www.spyfoo.com that allow access to the keywords any web site are using. Even more importantly learning what keywords are not being used. It might be better to compete by using a different set of keywords for the same product. Get to the top by changing your sites focus to where others aren’t playing. Much better to be in the first page for a small keyword search than on page 15 for a common keyword search.  

Consider the depth of where you want to cover.  It is much easier to command the front page attention from a small town rather than a large urban area.

SEO tidbits

You can place an ad and get your site to show up on the first page but organic (normal search results) are the ones that make the most difference.  Achieving organic results requires close attention to the text content of the page to satisfy the needs of the search engine.  The search engine knows what it wants but if you don’t know how it works you are not going get traffic.  Fancy graphical sites look good but graphics don’t show up within the search engines. It only knows text content.

Tidbits:

1) The name of the file and the title of your page can impact search results

2) Best results require the keywords in the page to match the name of the web domain

3) Your  keywords should  be repeated at the start,middle and in the last line of text

4)  Too many repititions of the same keywords will be seen as spam so don’t just flood the keyword on the page. The number of acceptable repetitions is done on a percentage basis against all of the text on the page.

5) Every page of your web site is graded for it’s keywords not just the first page!

6) Do you know how many other sites are using your keywords? Competition for some keywords are fierce.   Identify a nitche and own it. Where there is less competition it’s easier to get to the first page.

7) Design each page around a couple of keywords. Much better chance to have each page rank high than just going for your main page as the high one.

These SEO tidbits are not all inclusive by any means but they give a flavor on how to get the search engines attention. the right way.

Keywords proximity

Google and other search engines, use “keyword proximity” as part of their ranking formulas. “Keyword proximity” is how close the keywords that make up your key phrase are to each other. It is better to optimize for a keyword phrase rather than a single word. Keep your keyword combination as a unit as much as possible, but it is not always possible to sound natural by rigidly sticking to this rule. Then adjust your phraseology  to keep the keywords from your  phrase as close together as possible while keeping good sense to your readers.

Using the keyphrase “left handed monkey wrench” as an example:

The railroads used left handed monkey wrenches exclusively for many years. B&O railroad used a left handed inversed monkey wrench because their connectors were different.

Putting the word inversed into the phrase will still allow the search engine to count the phrase as repeated.

Also see Keyword frequency

SEO relative  Keyword Proximity (entered for here for a better prominence value!) not exact but in terms of proximity it is the same as the intial title.

 Keyword Density / Keyword Weight

These two parameters are almost synonyms, but there’s a bit of difference between them. They actually refer to the same indicator the percentage of keywords as compared to the general total number of words on a page. This effects results of the search engine result page (SERP) where the ranking is based in part on the percentage of words on a page that are similar to the words used in the query. Keyword density can be artificially inflated it’s then called “keyword stuffing” by the search engine and is considered spam.
Picture it this way if the page has a large text content the density of a single word or phrase can be greatly diluted.  If the page has less total text with the same amount of keywords it’s density score for those keywords will be higher. Inclusion of the keyword in any part of the shown page will influence the score so do not forget to adjust the title,heading and ALT text descriptors in the images to get a naturally better score.
The BODY text of the page should try to get a density of 3-7% for each keyword you optimize for on that page.  Keywords or key phrases should only be repeated 3-7 times for every 100 words.

Consider the keyword density / keyword weight when writing up the text on  page. It will infleunce how your page gets found.

Keyword frequency

Frequency is the absolute number of times your keyword is used on a page. It is not like density, because it is independant on the total number of words on your page. The frequency score for a repeated keyword 9 times on a page will be 9 for a page with 6,000 words and the same for a page of  60,000 words.

Frequency is another measure of keyword significance. The more keywords on the page the higher the relevance of the page as related to the search engine rankings. Putting too many keywords on a page can get be viewed as “keyword stuffing” and the search engine can penalize your web page for this practice.

SEO Keyword frequency (Note added in the last line to improve keyword prominence!) can make your site appear higher if it isn’t overdone.