Google, the most dangerous monopoly ever

I use almost all Google services ranging from search engine, over Gmail, Calendar, Android and Google Voice all the way to Webmaster Tools and Google Analytics. If you combine all that data, I think that Google may know me better then I know my self, and that is starting to make me nerves. Don’t get me wrong, I think that Google is a great company, the services provided are excellent, and I don’t have a reason to believe that my data has been compromised.