Hi,
Jomsocial uses Joomla users ; so you can connect Jomsocial with HikaMarket.
Using the HikaMarket options "vendor registration", you can automatically create a vendor for each user ; you can also use a user group filter.
The user profile can be Joomla or Jomsocial ; there is no special difference for HikaMarket.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.