Link: http://guestpostingnetwork.com/ Guest Posting Network runs on a PHP script similar to Fiverr, except that we customized it to allow $0 gigs, which I believe makes it perfect for running a guest posting network. You can create a guest posting offer and when someone purchases it (or orders it for $0) they will submit their article/content to you and you can publish it on your website. You can signup and add your website to get free content at anytime. You can also purchase an offer and submit guest posts to get links for your website.