I was originally an early user of a product that pre-dated Chalk, became obsessed with the feeling that @johnexley describes in the comments here, and spent a ton of time with @ptpells and @jnoh (Chalk's creators). So, @timkomada and I led a seed investment in a product that we think is desperately needed, particularly in mobile. Quite simply, Chalk can be the best place to have group conversations with friends and connections about virtually whatever is on your mind. It solves lots of problems that Twitter can't (and may never) handle. The closest thing I can think of is what @joshm had built on desktop with Branch — Chalk is a more open, accessible version of that on mobile. I find it's the best place to "hang out" online.
Chalk is the first app I've used since 2008 that's given me the same feeling of inspiration and, let's call it, 'loneliness-replacing connection' that I had the very first time I ever used Twitter.
As @conradd and @nbashaw and @canthardywait have echoed, the community on chalk is incredible. It's one of my favorite places to lean back and get lost on my phone.
Ambition Today - Shahab Kaviani of CoFounders Lab, Breezio, and Hyperoffice
Lex
The Lucid Realm