Does Google scan my emails?

Hi guys,

yesterday I talked to one of our groupmembers and he was not sure about signing in to this blog, because he told me, that google scans the emails of their members and customers.
So I decided to increase my knowledge of this fact and read some posts, comments and articles about this.
and...
...indeed they are scanning emails and collect informations about our online-behaviour!!!
Okay...in the first seconds I was really shocked...but then started thinking again and came to the point, that not just google scans my mails ( they really don´t, cause i´m not mail-customer of them, I´ve had my mailaccount at gmx so gmx is scanning my mails :D )... so every emailprovider where you sign in for e.g. yahoo, web.de, google a.s.o. scans your emails, cause they start sorting out possible spam mails.

Are we already glassy? Where does all these informations go? Is the CIA knocking at my door tomorrow?
Certainly, now it´s a question of assuring privacy. But I don´t get too paranoid. Since everyone did his first steps on the internet he never walked alone. Internet is anarchy, is detecting, is stalking. The fact that I got nothing to hide keeps me save.
Maybe one of the special squad team of the CIA is a little jealous, cause I had such fun on the last youthexchange 2008 in turkey and will have a whole lotta in belgium 2009, while he´s sitting there reading my boring mails :D:D:D!!! *wink*