Nielsen's recent survey on Internet use to elpais.es situation as the first daily network consulting.
The daily electronic mundo.es did not like the survey and have reacted by saying that the system will OJD situation to them as the first.
As the world * have not been here and gone to discredit the system Nielsen audience measurement.
also have Emphasises that OJD system is "real and undeniable" and impossible to handle (although the same article linked in a press release ojd where this expels the country in 2002 for the chance they had manipulated the system) ...
But how each system (as himself tells us mundo.es)?:
Nielsen has a panel of 16000 "households" (households and business users), collects the browsing habits of such a program installed on your computer. OJD
, insert a transparent image on the websites of the audited sites like the world and accounts for downloads of those images.
things first:
The world can not say that ojd is real and infallible when even a census data can give you a totally real and totally indisputable. You can always have structural flaws in the process. Etc. etc..
problems that may have Nielsen system is that the population is not wholly representative, having fewer than the required number of households to make estimates or reporting data users do not behave normally.
The first case we always try to minimize these studies and remedial measures are promoted. On the second point a sample of 1000 individuals representative of the population is more than enough in Spain. So if you have 16000 Nielsen are fairly well identified (extracts of population, etc) no problem there. And finally the third item always has an impact on these studies, but eventually users behave naturally.
The audience measurement system of OJD YES can be very easily manipulated and . Means enough to have computer skills and a number of computers making millions of requests continued to download mundo.es pages. Each download page with this system = more audience for mundo.es. The handling system can be more prepared to change the headers sent to the website so that each download "fraudulent" page appeared the ip is different.
Cope World and spent the headlines to show that manipulation was introduced Cope the EGM. From here I invite you to denounce the manipulation that can be made of OJD. Sufficient that the next outcome of the study of OJD the world get 7 billion visitors. The article holder "research" could transcribe as they see us up from outside the planet Earth!.
is the easy to attack the company if you do not like measuring. And on the day the world only one thing matters all know, regardless of the veracity of what is to be counted.
Indeed OJD system can also be manipulated in the opposite direction so as not to have your visits to this day Conspiranoids: Just visit your website with your browser set to not download pictures or java, et voila.
* Article of mundo.es in
elmundo.es/elmundo/2007/07/24/comunicacion/1185275284.html
