http://www.videogirls.biz/joomla/

VideoGirls.BiZ developed a free, GPL, Joomla 1.5 module that enables Joomla
users to automatically login to a Video Girls system. This is a great module to
use if you have a Joomla site with many members and want to offer them pay per
view / pay per minute video chat services. This works with all Ateom powered
turnkey sites including Video Girls BiZ, Software for Dating, Match Agency BiZ,
Buy Dating Site.

This module automatically creates accounts for Joomla users that are logged in.
Account type (member group) and profile type for account that is automatically
created can be configured from module parameters.

This module creates accounts using same username and email used for the Joomla
account. If users already have an account with the VideoGirls script (any type)
and use the joomla username and email, the module will not create a new one. It
will just provide access for the existing one. That means webmaster can promote
member accounts to performers or affiliate groups and automated login will work
fine for these.

Other profile types (performers, affiliates) must register using the VideoGirls
system or can be promoted from regular accounts by webmaster.