Hi Guys,
Whilst I agree that you should do everything possible to protect yourself, there are various ways that data can be gleaned ! For instance your IP address, unless you are using a VPN, will tell the web site exactly where abouts in the world you are, irrespective of what you might tell your computer.
Private browsing and never remembering history are fine, as long as you delete the cookies as well. And then there are the hidden data stores ! There maybe several dotted around, a particular web site will use the same place each time you visit, a group of them may all use the same place.
Emails sometimes have trackers and beacons hidden in them, its a very common way of discovering what machine and operating system you use.
Don't get me started about Android ! That platform was built to be a data collector !