Get over it. There are more than 11 reasons. Privacy is relative, especially in a world where your identity can be associated with a fixed static IP (common for broadband or MAC address - wireless). Only when egregious errors are made e.g. Facebook Beacon broadcasting on the newsfeed what someone bought for Christmas presents is it really visible. Deleting cookies (see what happens when you clear the cookie cache in YC, you're still logged in) does something for your privacy but not really.