What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
I think that you only need to share the link as a normal Facebook post, you would need to get the link of your form, to do that you only need to click on Preview in the Form Builder.
Then you will need to copy the link.
Here is a guide that will help you to post the link on Facebook: http://www.wikihow.com/Post-Links-on-Facebook.
If this is not what you are looking for, please provide us a bit more, we will be glad to help you.
Well when I do that it just puts a link to the form. I want people to be able to answer on Facebook.
As far as I know, Facebook does not allow content embedding from third party websites into the posts. Unfortunately, to my experience this is not possible to embed a form (JotForm or any other) to the Facebook post.