Nielsen data as inaccurate as Alexa data?

September 8, 2006

Blog has moved to www.webanalyticsbook.com

2 Responses to “Nielsen data as inaccurate as Alexa data?”

  1. J Says:

    More food for thought:
    NetRatings and Comscore use a panel of 30k and 100k respectively, and both use web widgets to capture data without using cookies. Hitwise uses non-widget software and online panels. (Would like to know the type of ISPs are that Hitwise has contracts with – 1st tier or 2nd tier etc). Hitwise does not currently capture anything after the domain name (I understand): No /home, no /myarea?pw=123 etc. Hitwise does track University originating traffic as well as Home and Work. NetRatings does not track University originating info because they say its complicated and/or expensive to be sufficiently accurate.

  2. Webanalyticsbook Says:

    Thanks for your input!
    Regarding university traffic it is interesting to see how these companies manage different countries. It is hard to believe that universities in central Europe give out any data. Privacy is a big issue and private companies will never have access to this data. The question remains: Which of these companies can really help determing the needs of the advertising industry and deliver accurate numbers.


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