There are a few social networks focused on PeopleTools and Enterprise Portal available on Oracle's Mix networking platform:
PeopleTools General
PeopleSoft Enterprise Portal
PeopleSoft, more than just Tools
If you would like to share information and ideas with other Oracle/PeopleSoft customers and Oracle employees, these are good places to visit.
Let us know if there are other useful networks outside of Oracle where PeopleSoft customers, consultants, and other interested parties meet.
