For the past few quarters, there has been some turmoil over the future of how to measure online video advertising, in a way that is perceived as being as accurate as broadcast measurement was once perceived. Operators and advertisers alike miss the certainty of knowing just what they are selling and receiving. We talk about perception here, because for a large part, there are problems at both the broadcast end and the online end. Broadcast advertising is valued in a virtual monopoly by Nielsen, and that has led to both frustration and a sense that Nielsen was always trying to say that everything is okay and nothing much has changed – at least until it was ready to respond to…