I'm wondering how much can be attributed to how Quantcast measures traffic. Compete.com and Alexa, for example, both show a decline, but it's nowhere close to b

I'm wondering how much can be attributed to how Quantcast measures traffic. Compete.com and Alexa, for example, both show a decline, but it's nowhere close to being as dramatic as the Quantcast one. http://siteanalytics.compete.com/variety.com/ http://siteanalytics.compete.com/variety.com/ http://www.alexa.com/siteinfo/variety.com http://www.alexa.com/siteinfo/variety.com