Poser World has been a membership site since 1999, however our store wasn't integrated and we had other issues prior to migrating to MojoPortal. We migrated about 2,700 pages into about 70 categories and migrated 4,500 users to the new website.
Poser World
http://poserworld.com/
Thanks to Joe's helpfulness and suggestions we migrated over with nearly no issues to speak of. Only a couple of users had login problems.
MojoPortal ROCKS!
Allen