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What’s your Walk Score? That’s a question that has become increasingly popular among urbanists since the founding of Walk Score seven years ago. Now real estate agents prominently display the number on their listings, knowing the value it adds to properties. Sign up for Podcast Alerts Subscribe

Matt Lerner is a co-founder of Walk Score and its original chief technology officer, and is now vice president of local engineering at Redfin, the company that purchased Walk Score in October. He is our guest this week on “Knight Cities.”

Listen to my conversation with Matt here. And sign up for the “Knight Cities” newsletter to get alerts as soon as new conversations are posted.

Look for new content posted every Wednesday here. You can follow us on Twitter at #KnightCities or @KnightFdn. And if you have ideas for people you’d like to hear more from, please email me.

Carol Coletta is vice president of community and national initiatives at Knight Foundation. Follow her on Twitter @ccoletta.