Webex will let you have side chats with other attendees (not talking, typing). Just make sure you double check as in my last meeting someone mistakenly put something in the general chatroonm instead of the private one they clearly intended it to be in!
I while on this thread, I will have my daily moan - fuck - my missus spends a lot of time watching fucking soaps on TV. Japanese, Korean, Taiwanese. I think she puts in a solid 8 to 10 hours a day on it.