Thank you for your comments! I'll think about everything, and yes, it would be super nice to collaborate.
you are right about the fun part being "hidden" at first until you vote, you don't have to make a user tho, I kinda focused on privacy a lot. If you vote for more than 3 things, it should already locate you in a group and show you the map. But I'm not a UX expert, so this flow could definitely use some improvements.
At any point, you can see the current clusters and how they compose themselves.
There is also this: https://memoria.uy/clusters/report/, which is the nerdy part, and currently not so interesting because of the lack of traffic in the latest weeks