So, after reading about this 30 days challenge, I went to @dragosroua page to read what is today's topic for the challenge. The topic is top 5 relevant witnesses on steemit. I realized I don't know much about witnesses and I can't write anything about it. I won't be writing but at least it gave me an opportunity to try and learn what witness is all about. Thank you as always for helping me to learn each time I read your post.