To me the reason people use FB market is because of the lack of friction. you already have an account and probably already have the app. just snap a picture tell it what it is and how much and you're done. don't have to sign up for anything, or wait for confirmation emails. (I think this also tends to be the case for their dating services)
They also from what I can see do more aggressive searching on the content of images. I was once looking for a slot machine. and it found me a listing that did not mention a slot machine in the title or description (I think they were both blank somehow actually) but there was one in the picture.
It also does a lot more suggesting than craigslist or ebay for example. Not just reminding you of things you already saw. but thats FB being able to scrape all your data and know everything you want of course.
They also from what I can see do more aggressive searching on the content of images. I was once looking for a slot machine. and it found me a listing that did not mention a slot machine in the title or description (I think they were both blank somehow actually) but there was one in the picture.
It also does a lot more suggesting than craigslist or ebay for example. Not just reminding you of things you already saw. but thats FB being able to scrape all your data and know everything you want of course.