Pros
I have worked at several tech companies in the valley and I must say that Nextdoor is probably the most transparent company in my experience. The company ethics is very high and every employee is fully informed of the product/financial health of the company. Every one feels like an owner of the product and there is a mutual respect in the company. The teams are well organized and there is a clear sense of responsibilities. The work is awesome too, as they are constantly innovating and using the latest technology. Work-life balance is on par with rest of the valley companies. Most employees love working here and don't think of it as just work. If you are stuck with something, folks are out there to help out.
Cons
None that I can think of. honestly.