Edge Rank Checker: mejores y peores días para publicar en facebook

How do we determine EdgeRank?

http://edgerankchecker.com/
 

Affinity * Weight * Time Decay = EdgeRank

Facebook defines EdgeRank as a mathematical equation:
Comparing a multitude of Facebook Pages Insights, we began to discover a trend between several data sets. We began working on an algorithm that is admittedly a work in the progress that is tweaked often to reflect the most accurate representation of EdgeRank on the internet.