Well, Facebook banned another one of my pages so I had to write another rant here: https://bizuns.com/internet/facebook-bans-sprucegrove-buy-sell
Here I get a little into an idea I am working out for an "Amazon Local" type service. A type of online service that may be huge in the future where shoppers can purchase items locally either used from other people or from businesses who have items for sale.
TownPost has a little bit of this baked into our search engine, some of my web design customers have their inventory in the TownPost search. So if you are looking for a specific item it will show you used results followed by local retailers that may be selling exactly what you are looking for.