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The only thing that needs thinking through for both/all of us, is how Adwords can provide this info without giving advertisers enough info to go direct to appropriate Adsense sites and cut them (adwords) out.
I cant see an enormous problem; to a large extent one advantage of advertising in Adwords means you save the admin time in finding, negotiating, assessing, drawing up contracts and monitoring performance with multiple sites, plus of course new sites find you automatically. So to a large extent they work sililarly to an advertising agency but only in a specialist area - online text ads.
However there may be other disadvantages to google i havent though of or they may see the above a bigger problem that i am seeing it at present.
Its a good analogy.
I believe that the next stage is the advent of "normal" advertising agencies handling large corporation advertising budgets to AdSense.
In the long run it may well be the large organisations that dominate. In the mean time they (large companies) will have to work out how to get their hands on content sites!
Today (Friday's) CPCand CTR is significantly less but we just added another site and have put it down to initial poor targeting until mediapartners bot visits.
Friday turned out to be my lowest revenue day since AdSense was launched, but it was still within 20% of my usual weekly lows (which typically occur on Friday and Saturday).
Today (Saturday), my effective CPM are back up to normal levels, so I'm assuming the Friday slump was a fluke or was the result of fewer bids being placed on Thursday (which was the last day of July).
As for Martinibuster and Chiyo's comments, I agree with many of them, although I'd point out that the assumption that Adwords = search, AdSense = browsing isn't necessarily correct. Frequently, AdSense = a person looking at a page found via search. And even when the "content ad" clicker has been browsing instead of searching, whether he's a hot prospect or a casual looker will depend, in part, on where he saw the ad. A user who's reading luxury-cruise reviews on The Robb Report's Web site will be a hotter prospect than a person who saw an ad for Platinum Cruises in a WASHINGTON POST winter-cruise roundup article.
I agree with killroy that the AdSense program is likely to evolve, and that advertisers will almost certainly have more choices as time goes by.
It's also important to remember that different advertisers have different goals. Some are affiliate sites or small e-commerce merchants who want instant ROI, while others are large companies that are more interested in prospects than in immediate sales. Just as important, some AdWords/AdSense advertisers have little or no offline marketing experience and may be nervous about a CPC of 50 cents or a dollar, while older, more established companies may compare the cost of a clickthrough to the cost of a traditional direct-response lead and think they're getting a bargain.