Now you’re ready to carry out the following SEO Dos and Don’ts to get your site noticed. Don’t think that packing your site with your chosen keywords will work, it won’t. Instead write intelligent copy that your customers can read, understand and digest. If you do this, your keywords should naturally occur as you describe your products and services and the benefits they bring. Choose five to twenty keywords to focus on only. By chasing too many you’ll never get the results you’re after. ‘Longtail’ search terms will occur naturally in your website's content.
You can earn by Adsense some money but with technique of optimization you can earn much more.