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Is it possible to switch to using members real names as submitted on registration, instead of their usernames?
If os, how?
Username is unique and does not change, the username and email in the Jomsocial are directly fetch from Joomla user DB when u register. You can not change it as it's from Joomla.
JomSocial is the most complete, easy-to-use addon that turns Joomla CMS into a full -fledged, social networking site