You're probably right, these days the sample is too small to be anything but a footnote, if that.  But today there are 415 sellers on the leader board, one up on yesterday.  So it is dynamic in some way.

 

Does it not follow that when the boards were busier, with a better mix of views and possibly a higher standard of discussion, the boards were worth ebay taking notice of with the leader board having a 'special' interest as a way of refining the sentiments expressed overall?