I strongly agree with this software update. A player how has blacklisted another player has explicitly made it clear that they would not like to interact with this player. Nothing good can come of that player kibitzing their table. I have certainly seen this in the main and other clubs like WP. allowing the player to kibitz then allows them to send chats to kibs and table, even if the player can't see it, and be very disruptive. In fact, I have seen someone prevent another player from basically playing because they would chat the cards from hands to the table. This is some basic harassment prevention and cheating prevention. Please add this feature to the new BBO