Ah, the future of social media as local social? Meet Nextdoor

[youtube http://www.youtube.com/watch?v=9V1tlhGjSMc&w=600&h=315]

Even though I'm a reprehensible snob about it, Facebook is a good way to keep track of what's going on in the lives of your far-flung friends. Twitter is less so for that (unless all your friends happen to be active on there), but good for information in real-time. The problem is, both are …