I think I have been a residual quite often here, when I get home late from work and put my two cents worth in, only to find out that I am talking into a void--everyone else has wandered off to something else!
I get that feeling myself, too.
Because I work irregular hours, usually I am at the tail-end of threads myself, long after the main audience has departed.
A bison in ballet, dancing in front of an empty hall.