Does the forum software support RSS newsfeeds? For example on DSLR you could subscribe to https://www.dslreports.com/forum/voip_20.xml and get notified whenever a new thread was started in the VoIP forum. Just asking because I sometimes got notified of interesting new threads before they got stale that way.
Unfortunately as far as I know DSLR never had a way to subscribe to individual threads so you could watch them for new posts, but not much forum software seems to support that.