Paid Posting Tools is a large marketplace for paid forum posters. Here you can find the best deals on forum posting jobs and latest updates about this business. Paidpostingtools.com is the best place to find forum posting jobs as well as blogging and content writing assignments. So basically you have to fill in an application and wait until you are approved (also they require you to make 15 sample posts).
Usually they take up to 24 hours review your application. They pay 0.15$ per post or even more depending on a posting job, on your reputation, advertiser and quality of your submissions. Money will be sent via PayPal on weekly basis