Specifically a trailing /1 is unnecessary though, because if the message-id
part of the URL is left out, we go to the first post anyway. So:
http://discuss.flarum.org/d/479/remove-the-number-at-the-end-of-url-seo-suggestions/1
is the same as:
http://discuss.flarum.org/d/479/remove-the-number-at-the-end-of-url-seo-suggestions