How do you create an online community that can foster in-person connections? That's what Nextdoor, the social network for neighbors, has been trying to do since its 2008 founding. This week's guest on Leadership Next is current—and former—CEO Nirav Tolia. Tolia, a longtime entrepreneur, talks to Diane about returning to the company he cofounded, what people gain by getting to know their neighbors, and what it's like to be on Shark Tank.

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