I have. I guess my model is the opposite of theirs. They place you in a big group with all your neighbors and I guess they hope you go to events and start meeting people. I put you in a small group, encourage you to do stuff together in a comfortable setting a couple times to establish familiarity, and then let you grow the group from there. Bottom up vs top down.
My neighborhood has 60,000 people living in it with ~600 people in the Nextdoor group. There's very little activity in the group, so I don't think people are really using it. I don't know what it's like in other neighborhoods so it may be that my neighborhood just isn't good for it, but if I had 600 users on Krewe from my neighborhood, there would definitely be a lot of activity.
My neighborhood has 60,000 people living in it with ~600 people in the Nextdoor group. There's very little activity in the group, so I don't think people are really using it. I don't know what it's like in other neighborhoods so it may be that my neighborhood just isn't good for it, but if I had 600 users on Krewe from my neighborhood, there would definitely be a lot of activity.