[LINK] YouTube surpasses 100 million US viewers

[Sylvano]

http://s3.amazonaws.com/thearf-org-aux-assets/downloads/cnc/print/2007-01-09_ARF_PRcomScore.pdf

On Fri, March 6, 2009 8:23 am, Jan Whitaker wrote:
> At 06:13 AM 6/03/2009, Sylvano wrote:
>>original pr from comscore with tables:
>>  http://www.comscore.com/press/release.asp?press=2741
>>
>>YouTube surpassed 100 million US viewers in January,
>>according to research from comScore. In total, US
>>internet users viewed 14.8 billion online videos
>>during the month, or 4% more than a month earlier.
>>YouTube led the growth charge, accounting for 91%
>>of the incremental gain in the number of videos
>>viewed compared to December, as it surpassed
>>100 million viewers for the first time.
>
> If anyone else was wondering how they managed to get this data across
> all those sources, here's how:
> http://www.comscore.com/method/tech.asp
>
> Whether a sample of 2million people is enough to make assumptions
> about percentages is anyone's guess. Yes, it's a lot of people, but
> is it representative?

Representativeness is certainly the key point. Sample size, while it
reduces sampling error, is mostly about the ability slice and dice to
smaller segments of interests.

This PDF gives a little more info into their methodology:

http://s3.amazonaws.com/thearf-org-aux-assets/downloads/cnc/print/2007-01-09_ARF_PRcomScore.pdf



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