This hack makes it so that a register user must pay a monthly payment to join a group. The user will join the group automatically upon payment. It is integrated with the PayPal IPN. Common users will be unable to read, post or search contest in restricted forums.

Features:

- Users can register as normal users, but only paid member can access certain forums on your site. The paid member will be added to a group you specified in your admin control panel.
- Users can pay for different time frames (1 month, 1 year, 2 months, 2 weeks, etc.), including manual payment and recurring.
- Allow VIP users to access all forums without payment.
- Allow trial period.
- Can be configured in the admin control panel.
- After subscription expires, the user will be removed from the group and can not access the restricted forums.