Guest blogging has been around for a long time. Even though Google has come down hard on careless bloggers, many sites still accept contributions and some even pay for people to blog for them. The Really Simple Guest Post Plugin is a simple script you can take advantage of to enable your visitors to submit posts without having to register on your site:
The plugin is very simple to add to your site. Just add a shortcode to your site, and your visitors will be able to submit posts. You will be able to review each post before deciding which posts to approve and which ones to reject (posts show up as pending). Submitted posts will have everything you need to move forward.
The Really Simple Guest Post script makes it easier to accept guest posts on your blog. Just don’t push your luck and avoid publishing posts that include link to shady websites. That should go without saying.