See How to Get high ranked in Google..

Getting a high ranked in Google is different from being indexed by the Google Spider - GoogleBot. You might have been indexed by Google but your site might be one of hundreds of thousands in connection with your keywords and you might not appear in the first 10 pages (beyond which you can safely assume no one will seriously search).

This is mainly because Google looks at the quality of the web pages linking to each site to obtain the most relevant search results. Thus more than link popularity, link quality is what matters to Google. In fact this is the single best way to get ranked with all "crawler" based search engines. Build your site links by promoting your site pages to as many relevant portals that accept external links - especially those with top ranking in Google. You can also get into link exchanges with top sites in google that have a good ranking (provided you keep a track of these sites in case they do more harm than good). Google gives a different rank for each of your pages so it is important to optimize your whole web site for adsense advertising.

You need to also make sure you have valuable content for Google searchers. What you can do is, concentrate on keywords (or rather key phrases) that is unique to your content. This will also ensure that you get more targeted visitors from Google. I am sure that your adsense earnings will be skyrocketing with this.
Tips on Google Search Engine Optimization for your web site

· Build quality links to your site pages from other well ranked sites on Google. The links for website that have quality links are limited. Boost your PageRank by submit to a sites which have good quality.
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· Make sure you provide quality content that have something unique to offer and that have keywords or key phrases people might search to find your site in Google

· Start for some web site pages tricks by making sure your top keywords appear in your title, meta tags and content

· If you sell products, for a trick give something away free (The word "free" is one of the top most searched words on the internet)

· Keep a track of your listings/ranking in Google and analyze it periodically. Some google tips on this:

• Indexed Pages : To know which pages on your site are listed in the google and to see how they will appear to google searchers type site: www.yourdomainname.extn in the google search box
• Link Popularity : To keep a track of sites that link to you (and also see their google page rank), type link: www.yourdomainname.extn in the google search box