If you think you're anonymous, then you are a fool.
If you ever think you are safe from interception on the internet, then you are an idiot
For once, to my astonishment, I find myself agreeing with Milo, although I probably wouldn't have worded it quite so heavy-handedly. In the 21st century, the only way you'll ever be anonymous is to eschew all electronic means of communication and live somewhere where google earth can't see you.