As you probably know, in order to attract as much traffic as possible to your website or blog, you need to post quality content on a regular basis. The content has to be original. If you want to use your time for other parts of your online business, you need to work with freelance writers. My advice is to choose only native English speakers and to test them before they start working. A short 100-words article is enough to decide if you should hire that person or not.