Fred Wilson on the variability of Engage Ment between viewer and content (and how it's decreased in Walled Garden-s). This isn't news to the [Direct Marketing] world. So, it's only a matter of time before GooGle (or a competitor) allows you, as an [Advertis Er], to payer higher [CPC] rates to some channels than others based on your own evaluation of varying click-value. Note that Google can't measure this and re-price (although with [Google Analytics] maybe you could use some sort of WebBug as a proxy for greater value): it has to make its model a more granular AuctIon market so that each Advertiser can manage his own mix.

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