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Did you read the patents, or understand them? They won't affect how MythTV works - since it doesn't do any audience measurement.
So what, if one day, MythTV wants to implement a similar function, why shouldn't it be allowed with its own code ? Software is not an industrial application. Patents should not be allowed in software, because they are still too restrictive for competition.
Just the title of the other patent "coupons and the like"... "the like" : what a very precise definition. Maybe the body of the patent is more precise, but the title emphisizes the danger of patents in software.