No, there's no legal right to anonymity for these things. But he just said "bad thing to start, bad thing to encourage." Here, let's try a thought exercise.

No, there's no legal right to anonymity for these things. But he just said "bad thing to start, bad thing to encourage." Here, let's try a thought exercise. "I got hit on by this guy at a bar the other night. Let's make it public that he's gay and obviously scum ('cause he hit on me). I'll give $100 for whoever can tell me his name and where to go to tell his neighbors, $50 for the person who told them, and $25 for each of the next people to tell them." See why it might be a bad idea to encourage this as a general solution to this type of problem? Don't get me wrong -- it really sucks that Threadless got robbed, and these guys (assuming they were the thieves) deserve to be found and punished. But as we discover new means of vigilante justice, it's worth remembering that vigilante justice has a cost in fairness, accuracy and rule of law.