I miss a feature from a other product. There is a hack for Threads 6.3 who allow you mark a forum read, according to mark all read. To do this, you click on the forum news icon. When it show that a forum contains unread messages you can click on it and all messages are read inside this forum only.

my board: http://www.dragonclan-forum.de
my hobby: http://www.biker-reise.de
Ich kann bei Fragen zu UBBthreads in Deutsch weiterhelfen oder es zumindest versuchen