I was curious about the witness program and decided to do a little reading today. Although just saying this was a good post doesn't seem to be what should be said, I do believe it was a good post and allowed me to understand what a steemit witness is/does. I didn't see what the minimum specs are for running a server to be a witness besides Ubuntu/Linux, although it may have been stated and I overlooked it. Will continue to do more research into it to further my understanding. Overall, good article.