Mexican living in México, ~95% of the population use Facebook, word of mouth or driving around where you want to find a place to rent. Of course there are many sites that you can use to find a place to rent, but the best deals and more options are available on Facebook.

Yeah. My experience been this too.

Facebook doesn't act as the central trust authority. So as an expat, most realtor is telling me to avoid FB and use them because scams. But as a user it's inefficient to talk to 20 Realtors for 20 listings.

I just want something in between that doesn't inflate the actual price by 40%