Collecting users' facebook public information

Dear Sirs, 

How can I allow my clients to provide details using facebook instead of having to type it?

It seems like an obvious feature for a formbuilder to have.

Every answer I have tried does not work. Please clean them up. very annoying!

If I am getting you correctly you want the Facebook integration in your form to be able to capture your user information form their Facebook page and fill it in the form. Unfortunately at the moment this is not possible. I will send a new feature request to our development team. Since this is a new feature, I may not give you an estimated assignment time (ETA) when this might be released, but once we get an update we will post it here.

We also have different Facebook integration:

1. Integration with FIT forms which enables your form to authenticate with Facebook to confirm if the form user is a real person:https://www.jotform.com/help/278-How-to-Integrate-Your-Form-with-Facebook-Fit-Forms-

2. Integration enabling you to add your form to Facebook page. https://www.jotform.com/help/22-Adding-a-Form-to-Your-Facebook-Page