I think that most of us who are here on a regular basis try hard to answer the posts from those quite obviously suffering. I have not been online for a week or so, but I do think that those of us who are here fairly regularly do try our best to answer. There is a difference between posts, and it is not always easy to catch every one, or to have a ready answer to every question. A percentage are healed stories or posts about something that has helped someone heal. And often people post one post and do not return, with those sort of posts.
My advice, as with others, if you find a post that is unanswered, answer it. Even just a few words. But, we are all in the same boat here. We are not experts and the "best" of sites, with many members online can still have people falling through the cracks. Don't beat yourselves up, folks. Just like the rest, we are only human. We do what we can to help our fellow members.