ViralRank™ which is a technology created for http://swarmsports.com can be used anywhere to show how viral a post is. We wrote a blog post announcing the release of this to the world: http://blog.swarmsports.com/2013/07/16/our-new-wordpress-plugin-is-the-tits/ – If you want more awesome ViralRank stuff, sign up for the FREE dashboard – http://viralrank.me/dashboard/ – you can play around with all kinds of cool statistical data there. Enjoy!