welcome to a npecial edition of "kqsroom."n this program, we're re-visiting interviews fr-c our archives with ganging business leaders who are using the web to create and strengthen communities or pioneering new alternatives to staples in our fridge and pantry.as we alsthem about the difficulties silicon valley especially in key hleadership positions., our first conversation is with prakash janakiraman, the co-founder and chief harchitect of nextdoor. the san francisco company allowseighbors to create private networks online to share resources and information about their communities. according to the company, more than 180,000 neighborhoods from the us tourope are using nextdo to share hyperlocal content. and we want to disclose that kqed is a media partner of nextdoor, using its service to deliver content to foubay area cities. welcome. -thanks for having me, thuy. -so, how did the idea for nextdoor come about? -so, about seven years ago, when we first started thcompany, we noticed a trend of social networks becoming more ubi