In the old version of flyer talk, and in the current version when I first logged on, topics which had new messages since the last time I visited were depicted with yellow folders. After I updated my preferences, they are all blue. This does seem to be intermittent, as at least twice since updating my preferences, I have seen the yellow folders at the top of the list.

I find this to be a convenient feature, and I would like to see this feature reimplemented.