This is a trend I've noticed more in 2017 than before, which is people posting information or points that could be answers to a question in the comments section. While this isn't a bad behaviour (people don't have to answer if they don't want to) I can't help but feel that people are missing out on recognition they deserve, and some questions are going unanswered as a result of people reading answers in the comments.
A good example is this: A cargo ship as big as a star destroyer, where the first comment points out a real world engineering answer to the question and the second a more socially oriented one (wrapped up in a question). At the time of me asking this there is no answer to the question.
So what is the best way to encourage people to promote their comments to answers?