This is a question that you might have asked yourself a few times. Then, you might also want to know how influential you are on the Internet as well. The truth is that the 'Internet influence' that anybody has is not something you can effectively measure by asking your friends to tell you how popular they think the individual is.
Thankfully, somebody has already thought and done something practical about this. His name is Joe Fernandez. Joe created Klout.com which is the de-facto standard of online influence.
Klout uses metrics from Facebook, Twitter, Linkedin, Google+ and several other social networks to determine your Klout score which ranges from 1-100 with 100 being the ultimate score anyone can aspire for!
So, there is really no need to speculate on the influence anybody has on the internet. All you have to do is to check their Klout score and you will know how influential or not they are!