Would you would like your users to post guest articles to your blog without hiccups, this is the plugin you want. The WordPress Guest Posting plugin comes in handy if/when you would like:

Guest bloggers to pay for articles they publish on your established platform (selling blog space)
To automate the process of receiving free guest posts from your users and other bloggers
To pay posters to guest blog on your platform
The plugin is renowned for the following features: option to pay and receive payments via PayPal, easy payment management, users can post without logging in thanks to the anonymous posting feature, reCaptcha to stop spammers and easy installation. The plugin has a buyer rating of 4.08/5.00 and costs $16 only.