It would be useful because, when you feed the Salon, a lot of last comments push the previous ones out of the page and you have to go back several pages to find them... The ideal would be not to take into account the Salon's comments because the replies are not aimed at you, but comment the article you're linking to...

"Dieu se rit des hommes qui se plaignent des conséquences alors qu'ils en chérissent les causes" Jacques-Bénigne Bossuet

It's actually (once again) something in later versions of scoop. At hulver's site for instance, there's a little space in the column on the right where you get links to all new replies to your comments.