I didn't know it about this whisper thing, but I agree that people may have things they don't want to say to everyone in the chat, but only to someone they trust. Then this whisper really works, and I think that's ok.

But I gave up chatting there because, first, I can't grasp what you write there, especially when there are too many people in the room. It's kind of hard for me to understand, for my mind to "process" so much information coming together. It's the same if more than 3 people talk to me at the same time. I really wanted to, but unfortunately I can't. I get totally "lost" (confused) if 4 or more people talk to me, even if they're only saying "hi, welcome".
Also, I gave up because I tried "interacting" sometimes, when I could understand what you were talking about, and then I tried to add something to what was being discusssed or said, but had no answer back. I mean, no one talked to me back. Actually, I'm used to that, so I didn't get upset or anything. I just wondered if I had said something wrong, but if I did so, I'm sorry. So, to conclude, I prefer not to go to the chat rooms, but that's ok (I won't leave PC).