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.
Thank you for contacting us. Here's a guide of how you can add your form to google site http://www.jotform.com/help/19-Adding-Form-to-Google-Sites. I think Google site forces you to use an SSL form. You can follow this guide on how to embed your form using https://secure http://www.jotform.com/help/keyword_search.php?rpp=0&keyword=SSL.
Take note the for free account you can only have upto 10 SSL submission if you excedd your monthly quota you will be notified via email that your form will be disabled and to enable your form you can 1. upgrade to higher plan or 2. wait for the counter to reset. So when does the counter refresh? That would be every 1st of the month.
Let us know if you have further questions.