It's fairly common for users to post threads or replies to threads on the wrong forum accidentally (i.e. US players posting on UK threads or vice-versa).
I suggest that each sub-forum includes "UK" "US" "AU" in the heading - "Suggestions for improvement - UK" "General Discussion - US" "Graphics Threads - AU" etc, in order for those on mobile to immediately identify the forum they're reading and replying to.
Purely a quick quality of life suggestion to reduce moderator / admin workload and prevent unnecessary confusion amongst players.