Normally only the relay would see ones location, but with your setup anyone can. This is a potential risk and I actually don't understand how you can suggest people that are most likely to be targeted by big-tech etc, to take it.

eg., anyone being bitcoin owner and maxi, that logs in on your server, will actually publish that they live in say, serbia or denmark. This is crucial identifying information for hackers (facebook).

Now, it is difficult in general to stay anonymous, but most people decide if they share pictures. But they won't think about protecting their ip address.

I would advise against this because you basically share part of the ip address of the devices that are connecting to you, publicly to anyone, while it is classified as personal data.

And your service will be targeted by bad actors to get more information about nostr users.

Also, how does it work? If a note is posted on your relay, and after a few months or longer someone queries for it, do you still have the geolocation data of that note stored in a database? How long do you keep this data? How is it stored?

I do appreciate the fact you openly stated this, nostr:npub180cvv07tjdrrgpa0j7j7tmnyl2yr6yr7l8j4s3evf6u64th6gkwsyjh6w6. Others can be already doing the tracking without telling the users.

In the end, people must learn to use tor or a vpn to mask their ip address.