Many of us knowing that Alexa is the ranking standard for website since there is not much standard out there.
People complain about how in-accurate of it and advertising agencies do not use the ranking for reference either. It makes perfectly sense. Today I go to alexa again and realize they change the look as well as the calculation mechanism I think. It is closer to the country visits from my google analytics so I suppose people and agencies could reference from Alexa a little more now.
TechNow alexa – http://www.alexa.com/siteinfo/technow.com.hk