How To Create A WordPress Powered Article Directory

You need massive traffic to an article directory before monetizing with Adsense is worth the effort of maintaining the site. A niche article directory will increase the targeting BUT most authors don’t structure their articles in a way for Adsense to bring in more than pennies per click.
Forget about using your authors as a mailing list because it will be unresponsive IF your message is even read.
As the owner of a niche article directory, you may profit by giving a free course on something related to the niche or by using a plugin that dynamically links to affiliate or CPA offers.