Is it possible that Jacob is calling others "cowardly" because he wants to prove how brave he is?
Taking a leadership role in a movement of moral prescience is at once commendable, laudable but also dangerous, onerous. I really appreciate what Jacob is doing by putting his face to the Wikileaks organization. It is something that I personally would not want to do.
Wikileaks' stated goal is to "...be of assistance to people of all regions who wish to reveal unethical behaviour in their governments and corporations." In this, Jacob is succeeding. He is assuredly revealing this behavior through personal sacrifice. Part one is complete. Rejoice. Step two will be about knowledge. Now it is up to supporters of this cause to spread that information as far and as wide as possible. We've already seen the power of knowledge in this first quarter of 2011. A reality that wikileaks, twitter, the internet and the freedom of information has wrought.
Instead of spreading this message, Jacob seems to sprinkle a bit of guilt and self aggrandizing. Maybe I am speaking out of turn because the only interaction with Jacob I have is seen in here in this thread. However, let's take a step back from our Jacob- and self-imposed guilt and execute the next stage.
Edit: By all means we should empathize with Jacob and try to understand his sacrifice. We do not, however, all have to be martyrs in order to be Good(tm).