The decrease in paid clicks on Google's online advertising network has been one of the worrying news of the first quarter for modern day advertisers. The Economist has done a good little piece of analysis showing why the decrease may only be the result of Google's own aspiration for more relevance and better performance of ads. And I think it shows pretty well why Google is here to stay and very far from being already "over the hill" as some put it. It is perhaps the most telling testimony of the company's ambition to build a sustainable position in the elusive field of online advertising and beyond that narrow perspective an indication of the stringent demands the company has on itself. So emails may be flying around showing how great a working environment Google is, but nobody should infer it's a corporate version of Club Med. And judging from their ambitious cooperation with SalesForce, these guys are going for a cut of every significant business transaction they facilitate.