Question:
The WordPerfect forum I use is very similar to this - but they don't have the capability of tracking whether or not you've clicked on a topic. So, the "new" indicators are on all the stuff since your last visit, but if you leave and come back before checking out everything, "new" will mean anything new since that previous visit and anything you didn't get to the previous time will no longer be marked.
Fortunatley, we don't have that problem here. If you don't get to read everything in a thread, there's no way for that to be indicated, but at least any threads "unclicked" will stay "new" until they are.
So, if you get the "search new posts" - which way would that work? I suspect that it would only track new items since the last time you checked in, and if you didn't read them all at that time, they would lose their "new" indicator.
Also, if I'm right about that last part, would the current system of the "new" tag on the title of the thread still be working as it is now?