Fred Wilson writes:
Many marketers have reached the point that they can’t easily buy more search. It’s getting harder. Keyword markets are becoming efficient and supply and demand are coming into balance. Of course, that alone doesn’t mean that all the other money will move into banners. Banners also need to produce measured returns.
But, banners carry branding value that text ads don’t. The return on investment measure is not as cold and hard with banners. And the big branded advertisers that are leaving TV and print in search of better performance on the internet want to be able to brand with their ads. And they want to control where those ads are run. They’ll pay more for those two features.
So branding/banners may grow faster than search/CPC in the coming years, or at least grow as quickly.