It would be very nice to have a community chat room to share knowledge and tips with other aha users in real time. My personal preference would be a slack room, see http://rauchg.com/slackin/
Thank you for the note. We recently launched a community for product managers at Roadmap.com. It's the world's first forum focused exclusively on product management, which helps product managers build products and be happy doing it.
Many Aha! users are active on the site asking questions and sharing knowledge around Aha!, as well as product management.