It was a useful feature in phpBB3. I know there is a New Posts button, but I just want
to see all those that have no replies. This is probably more useful for admin or mods
who want to make sure no user feels neglected. If someone posts but receive no responses for a time,
I do like to post a reply to encourage them. I can scroll through the threads for those
with no replies, but thought a search to get them all would be convenient if it exists.
BTW, I did do a search at this site for "unanswered" , and saw the thread about groups. I am not sure I understood it or if it would apply to my question. I did try.