You have also option to set for only registered users can favorite posts as well as where to show favorite posts link for adding a post as favorite. You can set widget for favorite posts where the user can see most visited posts on your website. For this, you have to put below function where you want to display your EFavorite Posts widget.
How to Allow Visitors to Add favorite Posts in WordPress Blog
It is a basic strategy to engage the visitors with your blog and engaging visitors is possible in a way when you allow them to add their favorite posts in your WordPress blog. Many budding bloggers do not know how to allow the visitors to add their favorite posts on WordPress blog. Here in this article, The Fanman Show is going to discuss easy ways to allow the users to add their favorite post in the blogs.