This module allows you to synchronize user accounts of multiple Drupal sites with Services module 3.x .
It can synchronize user account including ID,Email,PW. Also It synchronize core Profie & Content Profile module infomation when updates are made & manually.
For now It doesn't have Single Sign On function.
We have a plan for D7 support and are researching method to sync D6 site <-> D7 site.
This module uses REST SERVER supplied with Services module 3.x to transmit data between sites.
The reason why to use Services module rather than core XMLRPC are
* more infomation
* can use many APIs
* easy maintanance
* possibility of relationship with other services.
Summary
* This module allows you to synchronize user accounts of multiple Drupal sites with Services module 3.x.
* It can synchronize user with differnt server, domain.
* It contains master, slave moduele. Basically it transfers user data from master to slave site.
* If you want to sync two site's user data, You should enable master & slave module on each site.
* You can sync data manually whenever you like.
* You can sync data automatically when user data is created, updated and deleted.