I would listen but show lack of interest by searching in my purse or retrieving a text message from my phone. I don't like to be around gossiping, especially if it's someone I know. I'd also limit the amount of information I gave this person about myself, no information, no gossip!
What do you want the panelists to weigh in on? Email your ideas to editor Tamara O'Shaughnessy at email@example.com.