But recently, some of the Google Webmaster helpers have been organizing Google + Hangouts. Google + Hangouts allow up to ten people to join the live chat discussion. Last time, Jenny Murphy and John Mueller were in the event, I happened to catch it and so did a few others. Here is a link to the first Webmaster Chat on Google +.
Jenny announced the next one at the Google Webmaster Help forums:
When: Wednesday 31 Aug 2011 at 11:30am PDT for 1 hour.
Where: In a Google+ hangout! I'll post the hangout to my public stream. You will be able to find it posted on my Google+ profile here: https://plus.google.com/102817283354809142195/
Topic: To help keep things focused, we'll be selecting a topic. This week's topic is +Snippets and schema.org markup.
Honestly, it might start off talking about +Snippets, but they will answer almost any webmaster/Google related question, if they are able to.
Hope to see you there!
Forum discussion at Google Webmaster Help.