I was hesitant with NextDoor but I've found they do in fact provide very real value. At least for living in a city like San Francisco where you're not likely to actually know many of your neighbors.<p>My only concern is that it's starting to turn into a FUD (fear, uncertainty, and death) distribution machine. Pando Daily gave them a great review for keeping neighbors informed about crime[1]. However, now crime, muggings, etc are most of what I see on the site. Has my neighborhood suddenly become significantly less safe? Why don't I actually see this increase anywhere around me? Am I just that unaware or is this just a lot of noise? I don't actually have an answer, but it raises the question: is this actually good for me to consume or is this just the go to place to be afraid of your neighborhood?<p>That said, I've gotten great advice on where to find live dungeness crab in the city through the site.<p>[1] <a href="http://pandodaily.com/2013/01/22/nextdoors-unexpected-killer-use-case-crime-and-safety/" rel="nofollow">http://pandodaily.com/2013/01/22/nextdoors-unexpected-killer...</a>