Hi
while registering for my Jomsocial community , i want the "Fill using facebook or Linkedin" app.(probably a free one)
and How can i have Poll on my jomsocial page

hi Mamta.

Please go through this documment which explains how to achieve that > documentation.jomsocial.com/wiki/Setting_up_Facebook_Connect

And about pulls, I suggest to check this extension > extensions.joomla.org/extensions/contacts-and-feedback/polls or other extensions on our addons page here > www.jomsocial.com/addons