Guest posting is a two-way promotional tool: article writers get more visibility by exposing themselves to different audiences, whereas blogs get quality content that can drag in interested viewers. It's a technique that can be employed at any stage of growth of a website, premusably, it takes little effort and, at least when you're starting out, it can even come free (after all, guest posters also have a website on their own to promote). It's like setting up a network of affiliate websites/forums, except you're actively collaborating (which also makes for good personal improvement opportunities).

So, what do you do if you're looking for guest posters for your website? Do you really have to pay and go look on freelancing websites like Fiverr or Upwork or are there better places to look at for a more... "genuine" collaboration, so to speak? Do you just have to look for similar websites and ask around or are there any other ways to guarantee for the quality of the poster you're going to be working with?