Just wanted to pass on word that people in several Columbus neighborhoods, including neighbors in Thunderbird Acres and Leawood Gardens, are using Nextdoor to connect with their neighbors, keep an eye on the neighborhood and buy and sell stuff amongst neighbors!
If you haven't heard of Nextdoor, it's a free website and mobile app that gets neighborhoods connected through a private and secure website. Members verify their address, so people who don’t live in the neighborhood can’t see what's being discussed. This makes Nextdoor really useful for block watch discussions, but also great for organizing yard sales, listing things for free/sale, making recommendations for service providers, and connecting with neighbors that you haven't met before! Nextdoor also creates a neighborhood directory of other members in the neighborhood to help you remember names and faces.
To get started, go to Nextdoor.com and enter your address!
Here's a quick introductory video, too! http://www.youtube.com/watch?v=9V1tlhGjSMc