What would a dating app on nostr look like?

Some ideas:

* use range proofs to obfuscate certain attributes like height/weight/age while still allowing for filtering and search

* photos and personal info can be encrypted/decrypted using gift-wrapping techniques to obscure the original npubs that are behind each profile.

* maybe something interesting can be done with lists and hash collisions? Similar interests would cause higher colission rates while obfuscating the list from brute-force searches.

Also what would be the down-sides? Privacy concerns?