In your profile, under the "more" tab, there is now a "Discussions" link that shows all the photos you’ve commented on so far. By default, the photos are sorted by the most recent comment date. However, you can also sort them as usual by the photo’s publication date, received likes, favorites, popularity, views, or number of comments. This makes it easier for you to keep track of your photo discussions. Many thanks to
Matthias Polakowski for this great suggestion.
UPDATE: You can now also organize and filter these photos by categories
