@Wino:
Well, again, there are some interesting thoughts in the linked articles. You can't see the links (formatting issue) above, but it you go to the Slate site you will see the hyperlinks to source articles that say more than the synopsises(sp?).
Either way, I just think it is silly to say, "it is so wrong that innocent people may have been put to death" when innocent people may be sitting on death row or in a cell forever, all the while their care is paid for by the very society that cast them aside. That, to me, is a huge drain on society.
I firmly believe as well that a more frequently used death penalty would be a good deterant to comiting murder. You can't prove it, there's not enough data in ANY country in history. But I personally believe it would work.