Integrate BigBlueButton into a jomsocial based online tutoring community - http://www.profr.org.
Allow users to schedule and invite each other to an online class.
Integrate invitations into jomsocial messaging system.
Allow tutor to take payment from student before class using paypal adaptive payments to split the payment so that a commission goes to Profr.
Allow students to access their session recordings from their jomsocial profile page.