I had an interesting experience a while back that I would like to share. I took a client of mine to view a home that was owner occupied. We had an appointment and arrived right on time. There was no one there at the house so I used the lock box key to enter. We took our time viewing this home of about 1400 square feet. It was nicely staged and very clean. You could hardly tell that someone lived there. It was a nice day, so we finished our conversation about the home out in front of the house.
A few days later the listing agent called and asked me for feedback. I told him that my client liked the house but was not particularly fond of the popcorn ceiling. That is when he dropped the bomb.... He said that his sellers were recording our conversation and that my client actually said that she had a popcorn ceiling now and that it was not a big deal. The problem was that what they thought my client was saying were actually my comments and that the conversation continued outside and my client expressed that the popcorn ceiling would probably bother her over time.
So, I guess you never know who is listening in on what you think is a private conversation. I don't really think this would be illegal but it certainly seemed unethical! Now I am much more cautious as to what I say when taking clients to any home.