kickapps is a hosted community system, photos, video, blogs etc etc.
They have a SOAP user migration that allows users logging into your system to automatically be logged into theirs. There are plugins for Drupal, Joomla, wordpress. There is an API for anything else.
Anyone successfully setup a kickapps single sign on with modx users?
http://www.kickapps.com/
Looking at setting up such a community. I know I could do it all under modx but it would be like reinventing the wheel for a lot of things that they have in place and it looks like an easy option for rapid deployment.
