Well, Jan, now I am not sure what *you* are about. This thread is about writing naturally *and* optimizing text for
SEO purposes. And I would say most of the time somone who is concerned about ranking for a phrase is hoping to find customers, though there are other reasons people strive or search position.
To deliver sales the site has to rank well and have copy that attracts the visitor - so a combination of copy that is written naturally and tweaked for relevant terms would be optimum. If learning more about this sort of writing or helping others to do so is not a valuable use of your time, we will understand if you don't contibute further to the thread.
Cheers, MJ