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"When we hear the name Nielsen, we typically think of the boxes that are hooked up to people's television sets, recording  stats on everything they watch.  While Nielsen has been able to move somewhat seamlessly into the online world to measure video consumption, the company is still faced with ever-changing demands from content creators, publishers and advertisers alike.  In response to those involved with the distribution of online video content, Nielsen will soon begin recording online video consumption directly from computers, starting with its existing pool of participants that already have a module hooked up to their TVs.  \nThe goal here is to bring full Internet measurement to the TV panel, for streaming as well as for navigation.  It's an attempt to get the larger picture, on a household basis.  How does the consumer interact with both the television and the PC, inside their home?  Are they affecting each other in any fashion? Does one drive traffic to the other?  These are just some of the questions content owners have about the average consumer, and it's increasingly important as the two worlds of the TV and the PC merge in various capacities, from set top boxes to integrated options being rolled into DVR services.  \nThe problem, however, is that less than half of those that are already a part of the TV panel have agreed to let Nielsen measure stats on their PCs as well, according to Advertising Age.  Why the hesitancy?  PCs are more personally identifiable, and while studying what one watches on TV is something many are willing to do, there's a lot more potential for a decreased comfort level when it comes to the family or personal computer.  \nWhile Nielsen still plans on going through with this initiative, despite the small setback, the good thing about online video consumption is that it can be studied much better than television, in a far more passive manner.  Despite this, I'm sure it's only a matter of time before all media devices will need to become part of these stats, including mobile phones, the iPod Touch, etc."^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2008/02/12/nielsen-online-tv-panel/>