When a company needs a blog post written, email copy, website copy or any other form of content, it has two choices: hire an in-house copywriting team or outsource the writing work. This is true for just about every kind of writing. From magazines to dental offices, companies need writers to craft their online content to keep their visitors engaged and improve search engine optimization, or SEO. Many freelance content writers will write for a wide range of industries, but some will choose a very specific niche. Of course, you can also publish your own books, like I do. In that case, you will make money by selling your book to your target audience.