u/Exultant_Penguin_202

This sub has me completely hooked. I love looking at all these photos, wondering about the stories behind them and the people who took them. It’s so mysterious. I want to contribute.
My question is, though, where does one find found photos? I have never once, other than in bins at flea markets and antique shops, come across something I would consider to be a “found“ photo. Where are they all?