One of my twitfic pieces was in @thaumatrope today:
"Does everyone in your family have blond hair and blue eyes?" "Yes, it's a strong family resemblance." "Do they all have tails, too?"
There's a real challenge to the 140 character limit. Some of my efforts in this regard are better than others. @thaumatrope is a paying market, which puts this particular piece on the good side of the bright, clear line.