I was debating with a friend recently whether offerup.com or letgo.com would win this snap-and-post marketplace battle. I guess fb just rendered that discussion obsolete.
Offerup still remains a bit of a mystery. They have a unicorn valuation but when I go on there I am underwhelmed and they seem to have a lot of old listings. I am in their home market also which I think would be more used.
I just can't see either of these sites remaining relevant when fb takes over the market. I use both offerup and letgo, and each one works well in some geographies but not others. For example, lots of people post things to offerup in the DC area, but not to letgo. At the same time, I find lots of stuff on letgo in the Pennsylvania area. FB is going to use their network to overtake all geographies.
On that topic, I think fb tried to enter a number of market but wasn't always successful (looking around there's things like coupons / gifts / credits).
we recently released Townsourced.com as an alternative option to Craigslist and FB garage sales. In addition to buying and selling locally, users can post events, jobs, volunteer opportunities ect. Users create and moderate the communities. Users can also post to multiple communities simultaneously.