SEO is important to get readers. But if your writing is to obviously geared towards search engines you will quickly lose readers. When you write for a keyword phrase, you need to use the phrase enough so that it's recognized as the topic but not so much that your readers notice. If you have the same phrase repeated in a sentence, that's too much. More than twice in a paragraph is too much.
I use Spinner Chief service, because it is able to rewrite content automatically, it doesn’t make load of mistakes that other spinners do, and it is much cheaper and it takes under 10 seconds to rewrite a 400–500 word article. And after reading the article you sometimes need a few minor edits which can be done on their spintax editor. I guess it is cheap because it is a new tool, but I took the advantage of it and get it for a low price. It is also nice because everyone can try it out for free.
You are a blogger or content writer or SEO specialist, definitely looking for unique artistic content that focus your product or services as online identity. You know most of the Search engine looks unique content. To be in good state of the web world, you must have to ensure exorcism data in your site or blog, that attract your visitor to visit you regularly also it present acceptance to the search engine. As an online marketer you need content regular basis, but to write or create a brand new article concept and its composition is not an easy task!