And so it is for Google. For the last few years they've seen stellar growth. As a result they've a stranglehold on online advertising. This is all very nice, but it means that they're not going to be able to maintain the growth rates that their shareholders have come to effect.
Well, it comes down to this. Next and previous buttons on ads. Stupid, and no-one will ever use them, but they have to grab at anything they have. In the past year, the Google AdSense blog has been full of this sort of nonsense. Ads on everything, none of them really making the same splash as AdSense for Content. When it comes to it, who wants ads on their phone, or their cat, or whatever?
It's sad, but what can be done? The way Google is going, someone else may soon have the opportunity to take over.