Of course, my pleasure :) I'll send you an email too just to say hi.
So, in my case, I was living in Chile and I had booked tickets to Thailand and Japan (Ironically I ended up moving back to the USA for a full time job that I wasn't planning on landing!!)
In Chiang Mai Thailand, specifically, you can book a 1-3 month apartment for about $150 a month USD cash. They speak english, there's no lease, no craziness. And only a few guest houses offer these types of prices and terms, so you really had to hear about it from a friend of a friend type situation.
So I wanted to build a site that was a "curated list" of these apartments. And I didn't even have firm data, names and numbers of landlords, availability, etc. I just wanted to make something that looked and felt like airbnb, but was light-weight and mobile friendly (text, css, and basic js only. site load files of just a few KB not MB!!!)
So, I mocked it up, and made some posts to some reddits and discords where I was only sort of a contributing member. I basically said, "guys, all of us are having a lot of problems finding legit landlords with good terms and prices abroad. I have a list of a few that are good, but I want to scale it out and make it available as like a public service to our channel. Is this something you guys would read? aka, is it worth my time to do this for fun?"
And the response was overwhelming. "YES! I want to see this list!" and "Thank you so much!!! I'm having no luck booking a room right now". and etc etc. People I've never heard of messaging me for months, "Did you finish it yet?"
From a technical standpoint, the site was a success. It looked and felt like a responsive airbnb that worked on any device. The problem was that it was extremely, extremely difficult to collect data of any kind. Language barriers, not network effects, nothing. These landlords are so hard to find, they're like ghosts!!!
So the product fell dormant because of an inability to scale to the level of service needed for it to be useful. But the demand is there, and the grassroots method I used to discover that demand was really successful and mostly by accident ;)