I just finished listening to the Tim Ferris podcast episode with Jason Fried (CEO Basecamp). Jason says, that it's very important to become good at written communication. Writing is a prerequisite for every position they are hiring at Basecamp. He mentions that one of the most costly and inefficient things is having to repeat yourself or answer questions about something that should've been clear in the first place. If you can't communicate clearly, you're probably communicating three or four times more frequently than you need to.
Today's world is more connected than ever before. Answering emails or conversations on Slack are consuming a lot of our time at work. Since a lot of companies are building remote teams, writing becomes even more important.
Clean, concise and comprehensible writing can be learned. Jason recommends a few books like "Revising Prose" or "Simple and Direct". I realized that most people don't care about such an essential skill, especially in tech. The ability to describe something in a short and understandable way, is a skill which is probably way more relevant than knowing just another programming language.
Therefore, I'm very grateful for such a great service like 200 words a day :) The best way to master a skill is regular practicing.