Your private documents get copied to google. They pinky promise not to look at them. They will be stored in the google "attic". They'll never look. Of course they'll send a robot to check if any commercial services are mentioned in the document that google can help you with.
Your private documents get copied to google. They pinky promise not to look at them. They will be stored in the google "attic". They'll never look. Of course they'll send a robot to check if any commercial services are mentioned in the document that google can help you with.