Would Alexa get Smart and fill the gap to cover Google PR? As of now Alexa rank is a Joke! And since Google is kid of backing off on PR display/calculation. This is time for Alexa to get smart and take advantage! Do you think, Alexa is going to get smart and fill the gap?
i dont think that alexa rank is a criteria for the google serp and i'm sure that it will not be an important serp criteria in future. as you said , it's a joke and it will continue to stay as a joke too