"Mark all as read" buttonFollow

I'm more than a little OCD and like to have all the threads on a page unbolded, but sometimes there are a lot of new posts and it is too much of a hassle to click each thread just to mark it as read, especially when they are threads that I have no interest in keeping up with. How possible would it be to add a button to do this for us? Don't get me wrong, I love the fact that it bolds thread titles when there are new posts; but I think this would be a useful feature to have if it's easy enough to implement.

Option 1: Middle click every thread to open in a new tab, middle click the tabs to close them again without looking.

Option 2: Suck it up and don't ask developers to spend time on incredibly minor features.