I can tell you what Google’s advertising preferences think of me: Nothing.
This isn’t by magic, it’s just a by-product of the way I browse. I don’t leave any traces locally, and unless I log in to a service they don’t know who I am. Additionally, even if I log in to identity tracking services such as Google, Twitter or Facebook, then those services only see a very small view of what I do as I segregate such browsing from the rest of my use of the web.
How is this achieved? I use multiple browsers and I use the privacy features.
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