just found that you can reply to an individual plurk... so it IS different than Twitter.
randyallen
says
Plurk whore
chrisbartow
says
PLURK YOU!
randyallen
says
most of your Plurks are doubled on my timeline, SO BUGGY
chrisbartow
says
when I first signed up it told me to upload a profile pic but it would just error out
randyallen
says
re-dick!