How private is your life?

After Google's Street View cars in May 2010 "mistakenly" collected private data - which included emails and passwords - they promised they'd tighten up their privacy controls. Read Google’s senior vice president of engineering and research, Alan Eustace's blog on what these are.

How do you know that someone out there isn't collecting all your data? Private companies who want to target you in their latest advertising campaign? Government pulling a Big Brother? Criminals trying to steal your money? 

• How private do you want your life to be? And to what lengths would you go to ensure this?