Is it possible to install a tree-view type commenting system, simiar to Disqus?  See here: http://www.mediabistro.com/tvnewser/nbc/fire_at_universal_studios_86019.asp

It makes it easier to read comments which are replies to previous comments, and it also features the “reply” button which makes it more clear that you are responding to someone’s comment, not just posting a generic one.

I get lost in such a system,i remember on digg i always forget where i was and whom i am replying to,its tough to track,for me atleast.

It’s difficult to say if it can be installed or not but it would make things easier for me atleast.