Use a keyword tool to help you find the most targeted keywords to your site.
Enter phrases and find the most searched and least competitive then include this text within your copy on your page.
Keyword Phrases are best to concentrate on. They are normally less competitive, what people will actually search for and offer a higher conversion ratio.
Consider each and every page a prospective landing page, so optimise each page accordingly. This can be a very time consuming and expensive process especially if you out source for this service.Why not do it your self and use some of the extra money for something more creative.
Dont over stuff your copy, make it read as natural and organic as possible, overstuffing can be considered an unethical approcah and will get you penalised and site delisted.
Use the same keywords as incoming links to your site from others, doing this will reiterate your sites importance and help you rank higher.
