We have just launched a keynote speaker influence ranking page, giving an indication of the social and online reach of people who work primarily as keynote speakers. The widget is embedded below (and you can embed it in your own website if you want), though it is better viewed on the main rankings page.
There are and have been many influence ranking systems around. This one focuses on a particular group – keynote speakers – for whom online influence is particularly important, and brings together three measures: Klout, website traffic, and Twitter followers.
It is of course very easy to criticise any influence rankings mechanism, and we do not pretend this is by any means ‘accurate’, it is intended to be indicative and interesting. We have provided complete transparency by publishing the algorithm we use. The intention is to tweak and develop the algorithm over time. Let us know if you have suggestions on how to improve it!