Alexa rank is irrelevant lol.  Alexa rank is not traffic rank.  Alexa is just tracking people who downloaded the Alexa toolbar and the sites they visit.  People who are into SEO and internet marketing, or even crypto-investing are more likely to have the Alexa toolbar installed so crypto-community based projects like list are bound to have a higher ranking just because its visited by lots of crypto-nuts who have the Alexa toolbar installed.  It's biased.  Factom deals with business who have no reason to install it, so it means very little as a ranking method.