I turned on Guest Chat for last Monday's OtC cast ("Shadows" theme). As on Saturday night, again no problems. We had a few guest chatters, all of whom were "plus" contributors to the cast. At least a couple of them were new viewers who expressed interest in joining the cast again sometime. The one person who had to be banned for spamming the chat was a signed-in viewer.
It was kind of funny as two of the guests disagreed with each other as to the merits of 80s music. They were going to settle their differences with a duel. Good-naturedly, of course.
If Guest Chat encourages more participation from more folks, then that's a good thing for all of us. My intention is to continue to allow Guest Chat unless and until it becomes a problem. Off the Charts has a great group of viewers. Thanks to you all.