If you sell anything, connecting with your neighbors right now is important because normal tactics are postponed at the moment. Everyone is learning the ability to pivot and stay engaged. Join the site, get to know the people around you, form a connection, this is could be a new way to sell and build in your neighborhood.
If you don't have something, a person down the street may have something. I logged on today and someone was giving out loads of toilet paper. In the platform, a native marketplace, people are selling and giving free things away all the time. If you interested in some easy additional money, pick up a couple of free things and relist on eBay and Facebook Marketplace.
Nextdoor is also a good listening tool to see how people are navigating these times, listen, engage, and determine how you can bring value.