6.
Google's toolbar is spyware:
With the advanced features enabled, Google's free toolbar for Explorer
phones home with every page you surf, and yes, it reads your cookie too.
Their privacy policy confesses this, but that's only because Alexa lost a
class-action lawsuit when their toolbar did the same thing, and their privacy
policy failed to explain this. Worse yet, Google's toolbar updates to new
versions quietly, and without asking. This means that if you have the
toolbar installed, Google essentially has complete access to your hard
disk every time you connect to Google (which is many times a day). Most
software vendors, and even Microsoft, ask if you'd like an updated version.
But not Google. Any software that updates automatically presents a massive
security risk.