I have noticed that my Android phone sometimes helpfully asks me if I want to 'make the page mobile-friendly?'. I only ever said 'yes' once. I found that it shows the answers, but hides the comments. *facepalm*
Along those lines: if you are answering someone's question, please use 'answer' instead of 'comment' (and don't 'reply' to someone else's comment unless you are commenting on what has been previously commented!). It then shows in lists as having received an answer. There are times when I have gone into a question which seems to have had no answers, only to find that oh-yes-it-has, with lots of useful information, but that they are all comments, which keeps the question in the G2G Unanswered list.