I suggest that consideration be given to sorting that listing based on the date and time of the initial post in each thread.
This is especially true when you're reading threads in order down the page but when you return to the main listing to move to the next thread you're interested in, the page refreshes and the "next" thread has moved above the last one you read.
Rather than do it one way or the other, I would like to see an option. I like the data being constantly updated. Others may not. For Popular Discussions they implemented an option of Most Recent or Most All tim, at the top of the column. I would like to see more options like that. Some will like it one way and some the other. And some will want to go back and forth. They already did this type of option for Popular Discussions, so it should be relatively easy to do in other places.