When most people talk about SEO content they refer to stuff that is written merely to please the search engines but when the readers go through it, they find nothing but a whole lot of crap. With such content you might be able to get visitors to your site however it will be very difficult to keep them on the site for long because once they read the badly organized content they'll go away. This would mean that you conversion rate would be pretty low, which ultimately signals that you are not making enough of sales.