This myCred add-on charges points to BuddyPress users for certain actions: sending private messages, joining groups and viewing other users’ profiles. Users are charged and credited in myCred points.

Profile Access lets users buy and sell access to their profile for points. Messaging charges or credits points each time a user sends or replies to a private message. Group Membership lets users pay for group memberships, and you keep the points or share them among your group members.

It installs on a single site or a multisite network.