One thing I have used alot in phpBB3 is the "View your posts" button. It lists all the threads I have ever participated in, show bolded titles for ones that have new posts. It's very handy. People use it (http://www.avforums.com/threads/participated-threads.1825342/ ) The almost equivalent in Xenforo is "Watched threads". Does Xenforo have a participated threads (vB) or "Your posts" (phpBB3) addon ?