We'll create fresh WordPress site with Post Like Manager installed. You have 20 minutes to test the plugin after that site we'll be deleted.
PL Manager is a plugin for adding like and unlike functionality for posts, pages, Custom post types. It has many configuration settings, that you can customize it fully. it will show a list of most liked posts. If you have already liked a post and now you dislike it, then the old voting will be cancelled and vice-versa.