It’s neighborhood-based: a private social network for your specific neighborhood. You must use your real name with this one, and your real address. It’s been around awhile, but is expanding to many more neighborhoods.
If you don’t live in a specific neighborhood, you can’t join that one, nor see anything in that network. Also, if you move away, you’re no longer able to be a part of that neighborhood network.
In this type of social network, things are much more personal, and private info is more readily divulged and leveraged. For example, you can post queries regarding neighbors’ experiences and recommendations with various tradespeople and professionals: Mowing services, auto repair, doctors, dentists, etc. If you pet is missing, you can include this in Neighborhood News. Was a home burgled? You’d be interested in knowing that.
Need a babysitter? Giving away an old desk? Need a bookcase? These needs are “local,” and local resources exist. It’s more targeted, personal, and perhaps immediate than something like Facebook, for example. Maybe you’re looking to join, or post, a carpool. How about starting a nanny-share?
Any downsides? Boundaries are sometimes arbitrary – maybe some folks you’d like included are outside a certain zone that is normally an inclusion to your neighborhood in other contexts. You can lobby the “Lead” of a neighborhood, if you like, in seeking a change to boundaries.
Also, sometimes condos or apartment houses get chunked as one entity/address, but that’s being worked on. Be aware that if a network like this is ever hacked, your name, address, and any personal info you’ve posted might be accessed – a home full of valuable antiques doesn’t need a high-profile, for example. iOS and Android apps are coming.
And now, I have to query my neighborhood as to where I left my bike after that block party…