The allure of that seems enticing, but I've found in practice that the effort to income ratio is not what it seems: it takes a lot of effort to even hit that $300/mo mark, and it's not "set it and forget it" - in most cases you have to keep working to keep viewership interested or keep ever changing Seo rankings healthy.
I ll give you one. You can republish email content from the fashion industry and affiliatize every outgoing link via Viglink or Skimlinks. Take your time to select expensive brands, do some basic SEOing, encourage social share, force visitors to give you their email addresss when they get on a deals page before clicking through. Twice a year you will have a brand send you a take down. It will take you some time to get some traffic but you will hit $300 per month eventually.
If you were willing to spend some time in curating the homepage then you could do even better.
I have done this, and honestly I got only two emails from major brands. In fact I got half a dozen emails from smaller brands wanting to be featured on it. I got also a couple of brand monitoring company who would use the product. If you are interested just email me and I will share more information with you.
Edit: When I say I have done this, I mean for two years, almost three. I saw from my Clicky stream the companies that would visit the site, and they included several of the brands whose content I was republishing.
