Local = Offline Connections Driven by Online Network Effects Nextdoor Active Neighborhoods 200K SA 150K s, U d o o h r o b 100K h eig N e ctiv 50K A 0 2011 2012 2013 2014 2015 2016 2017 2018 Source: Nextdoor (5/18). Note: There are ~130MM households in USA. Nextdoor estimates that there are ~650 households per average neighborhood (~200K USA neighborhoods). 21