Because I am curious. I love to read about what stack each company chooses to use and why. And even more so for brand new companies that start from scratch and have so many options.<p>For example, did they use RethinkDB for the real time features? Or something more conservative like RabbitMQ?<p>How about their primary data store? Postgres? MySQL? Or something more trendy?<p>What about the language? Python? Node.js? Something more adventurous, like go? Why?<p>No, I am not affiliated in anyway with them. If you google my username you will see my project, which has nothing to do with them, and is a bit too Xrated for HN.