Currently there are many people contributing plenty of content and discussing many different topics in the comments section on the main page. As more & more comments are posted it is becoming increasingly difficult to follow individual discussion topic. I think you should consider adding some sort of hierarchical structure to the comments section so that each individual discussion topic/thread becomes easier to follow.
Here is a comments section on another website that features such a hierarchical structure:
I think it would be a good improvement that would appreciated by everyone if you added something similar to TFMR.