Google

Google's new policy will allow them to search through your Gmail to help decide which Google Products sell to you, also allowing YouTube to recieve the same information. Google will also look through all of the websites you use and base their ads off of what you have seen, trying to guess your age and putting ads relevant to that data. Google also will look at your Google calandar and tailor the ads to the activity you are doing for the day.

Mark W. Smith from the Detroit Free Press explains the new policy of Google and breaks it down. He states that Google will have access to the information it stores about you using its applications like Gmail, Google Calendar, etc. He also explains how Google will now be able to send Google Calendar reminders to your phone based on your exact latitude and longitude. Smith says that many Web users found this to be a bit shocking and disturbing.
http://www.freep.com/article/20120131/COL41/201310311/Google-streamlines-its-privacy-policies-and-the-results-can-be-startling

I, for one, exteremly disagree with all of the changes Google is making. If it is illegal for somebody to go through our mail without our permission, it is the same for my email.. whether Google owns it or not. My private messages between my friends and family are my business and not theirs. The ads on the side are annoying as it is, because I'm not going to buy a designer purse online anways, even if that is how they make money. My messages are for my eyes only. Privacy is privacy. Period.