A first attempt at sorting
sort_key | text -----------------+---------------------------------------- 0019 0022 0012 | Top response to top reply 0019 0022 0001 | Meh response to top reply 0019 0022 | Top reply to top comment 0019 0006 | Earliest reply to top comment 0019 | Top comment 0003 0005 | Reply to less highly rated comment 0003 | Less highly rated comment 0000 | Crap comment that nobody wants to read