Yeah, but this is about the Internet as a whole not just Gmail IMHO. You need more than that extension to block it then. I use Privacy Badger by the EFF. They

Yeah, but this is about the Internet as a whole not just Gmail IMHO. You need more than that extension to block it then. I use Privacy Badger by the EFF. They block all kinds of tracking. Also using Firefox will prevent Browser fingerprinting and such.