Very! Google provides a way for you to opt out. This is not the case of "Oh, I went to their website and they sued us out of existence." This is more of a case of they were asked to not do something and they said fuck you I'll do it anyway. I don't like CFAA but I'd say these 3tap people failed at being nice to others.
Yes, I remember those discussions here in HN. The simple fact was they had built and entire product around someone else's data. They maintained an "f-you" attitude even after the cease and desists. Those companies got hammered because of their arrogance. They could have built a CL-killer but instead they built a CL-piggybacker but did so in a way that violated CL's terms of use.
Screw them.