There would be a lot more empathy if they would be voluntarily offering any kind of compensation, which really is the least you could ask for.
I mean -- I kind of feel like if you're going to store your core business information in software, you're just going to have to deal with the fact that software has bugs. It's the nature of the beast. So, is it really something they owe compensation for?
Probably they owe a bugfix, that I grant you, but compensation? I mean I guess if there was an explicit contract for the feature that tied compensation to it I could see a good argument that they owe compensation. But do they owe compensation to the good people of Hacker News who are suddenly talking about DDOS-ing the feature? That seems like a much harder case to make.