Yeah, I still think that it should be confidential. At least from the people who are being complained about. At least the authorities/SPCA can no who he was but the other people involved don't need to know. I can't think of a good reason why they would. It would only encourage people to "take matters into their own hands."
My parents have a very spiteful neighbour who called the SPCA on our very nice meighbour on the other side. When the SPCA came they didn't say who had placed the call but the dismissed it as soon as they saw how well the dog was cared for. We know who called though. He's a horrible, jealous, vindictive person and he is a big trouble maker on the block. He gossips and really hates my parents. I don't even know how it started. I don't think they do either. He's an old man now though. I could tell you some stories!!!!
Anyway, I'm still surprised that they would share that info.