Nextdoor.com just launched, and so far it looks like a pretty cool idea. It's a way for real neighbors to meet each other and communicate with each other online. Go to NextDoor.com for an introductory video. As the video shows, it's great for the "lost a cat" or "block party this weekend"-type of communication. Since it's so new, you can go on and become a "founding member" of your particular neighborhood if it hasn't already been registered (I intend to go on for my neighborhood in Burbank). Is the devil in the details here? Of course. Will the law of unintended consequences apply? Sure. But let's all watch and see what happens next.