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I cannot walk around the city and determine who is using Tinder.

But with this app I can purposefully visit a place known to have a user.

i.e. real-world interactions have a lot more repercussions than cyber-bullying.

relevant: https://www.engadget.com/2018/09/15/grindr-location-info/

Since you mention Grindr, I remember in my company there were guys who would sign up as gay, just to see who in the company (and I guess in their social circle) was secretly gay, and tell it to other people. The irony is that they would find other guys doing the same.

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