[franze]

google has 400+ recommendations (specs, recommendations, posts) about what you have to do to perform well in google. without even counting schema.org or other initiatives.

(google) analytics is an unbelievable powerful tool that has at some companies whole teams dedicated to it

google webmaster tools is a unbelievable powerful tool that tells you 80% of everything that is wrong with your site. you can easily make it your half time job to use this tool to the fullest.

google is part of the triangle: your webproperty, the users, google search

your ressources are better invested into these three areas (analytics, webmaster tools, google recommendations) than in a third party with its own interest i.e.: selling tools

[anon1385]

>a third party with its own interest

You say that as if Google don't have their own interests: encouraging more people to spend on Adwords, sending more clicks to sites using Adsense, sending more clicks to their own properties, encouraging more people to use Google Analytics.

Google don't want to send traffic to your site, they want to sell ads.