If you want to meet your neighbors, do it in person and exchange emails. In this age of cyber stalking a site like this shouldn't exist. Nextdoor also wants to commandeer your contact list from your email. Don't make the mistake I did, if you have to join, set up a separate email for this. If you want to sell your junk online, they do offer the opportunity... probably the same level of safety as any other online market. And if you are online shopping, nd will give you tons of popups for stuff listed on their site.
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