I've a question to the Facebook experts here. So I set up a App ID linked to my Facebook page so that users can login on my website using Facebook. I checked my App stats after 3 months and found that I have over 500 users who have used Facebook to login as a user on my website to complete actions e.g make a blog comment. I have all the basic details of these users like first name, last name, email etc. Is there a way for me to convert these users to fans on my Facebook page? If there's a way, that would be quite useful to engage them continuously with relevant content. TIA.