A lot of people who have an online business try to figure out how to write SEO articles, even though some say SEO is dead. The secret to writing for SEO is not to keyword stuff the crap out of your writing, but rather to write for your audience while sprinkling in your keyword phrase. You want to maintain a fairly low percentage of the occurrence of your keyword, include around 5 related keywords, and you need to know the right placement for these keywords.