We recently reviewed a bunch of competitive research tools , and in that spirit I thought it would be a good idea to review Alexa . It is not that Alexa is the #1 service available, but they do provide one of the better services while being free . Every few years it seems they fall behind and become a bit of a relic, and then every few years they catch up. Recently when using Alexa I saw they added a good number of features, so I thought it would be worth doing a run down.