Social Auto fill

I really want to use that feature but i'm having a hard time finding where to integrate it. someone please help

Are you referring to filling in your form with social information such as getting facebook information to populate the form? 

As far as I know we only had an integration called fit forms for getting facebook information but, after checking upon this further it looks like it might have been taken down by our developers until it can be fixed since it was having problems from what I recall.

If you meant something else then please clarify.