During PLING teleconf, there is a parallel IRC chat running. Here are the details (Thanks Thomas!):
Those with member access can use this web interface to access IRC: http://www.w3.org/2001/01/cgi-irc
This third-party Web-based service has been found useful by some: http://www.mibbit.com/
During the call, we'll be in channel #pling, on irc.w3.org, port 6665.