Tom Foremski:

Clicks are at the heart of Google’s business, so why are these metrics no longer viable? And why hasn’t this change been noticed widely? Why didn’t the Wall Street analysts ask about these missing numbers in the financial call the same day as the report was released? 

What is Google hiding?

The seemingly unstoppable revenue per click decline is the most concerning. Look at these past 19 quarters, but it’s been going on for far longer.