Can I share my form on social media?
As your form is web based you can share it on social media simply by including the unique form URL in your posts. Your forms URL can be found by logging into your account and clicking the green Install button. It is displayed in the yellow box at the top of the Installation page.
Is it safe to share the form with my social media followers?
Your form's web address only gives access to the form itself, with the ability to input signups (it does not grant access to your account, or to any signups that have been collected), so it is safe to share with your followers.