Tadoku itself isn’t all that big either when you compare it to Koohii. There is at most 100 people participating in any given round, and most don’t bother with the forum.
The only reason Tadoku has a forum now is because it was not worth the effort for Unseen Japan to keep up the forum that replaced the old Koohii forum. It hasn’t been the same ever since it closed down.
For me it’s also not worth the effort to switch forum software because of the following reasons:
- The user base is rather small, so not many would benefit from it
- I’d have to learn a new forum software and integrate it with the rest of the site
- Find a way to migrate all the data
- Make sure the new forum software is safe
Maybe in the future that might change, but as of now I don’t think it’s worth the effort to fix a couple UX problems that only a few users have.
I’m also totally fine with the forum staying small with only a handful of users. I took over the forum mostly so the information wouldn’t get lost.