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.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
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'm not sure what exactly you are referring to display the form randomly. When the form is published on any of your webpages, it will be displayed everytime the page is loaded. Could you provide us with more information on your requirement so that we can guide you in the right direction.
I believe tsvevents' intention is to spam fb users using JotForm. Makes you wonder what type of information will be gathered.