I tend to post comments quite often on various articles. Sometimes I even get into discussions, but then I simply forget in which article I commented or if I did at all.
A nice feature would be to view your all posted comments so you could reopen them, looks if anyone replied/liked it. GameSpot does this by sending emails but this could get to spam'y (is that a word?). Perhaps some sort of notifications as is Facebook, so I can basically follow and not forget my conversations/comments/discussions whicho curedon articles/news briefs/etc.