• MindTraveller@lemmy.ca
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          3 months ago

          Your SI is a unique tracking code Google assigned to you. When you share a link to a youtube video, Google puts your SI in the link, even though it doesn’t serve a purpose in helping people reach the video. What it does do, when you visit a link with someone else’s SI, is tell Google that you followed a link shared by this other person. This lets Google see who you’ve been talking to on other platforms, and track your relationships and social movement patterns.