Follow My Blog Post is an advanced and highly-developed WP plugin that allow your visitors to follow different posts, pages, tags; authors etc. without even creating a user-account of your own. With this plugin, you can also allow your visitors to unfollow any post, tags, authors etc. via unfollow button. You can also view post and page wise followers using administration panel and is packed with astonishing features ahead.
Sorry, but you need at least 25 posts and 5 hours online time to unlock hidden content.