Smart.
Geek that I am, I have been checking the number of votes as each round closes. Whether people who have been voted out have stopped voting, or we have a jaded readership, its been steadily dropping (Round 9 less than half the votes of Round 1)
Of course, that's not to say the stories in later rounds might not be better (far from it, just the interest has lagged) but for fairness, mixing all the stories up for the subsequent rounds might be best!
Bring on the semis!