Google is now frequently conducting live webmaster hangouts with normally one Googler and then nine other webmasters on the Google Webmaster Google+ page.
Google's John Mueller does a ton of them and he said he is ready to schedule a bunch more but wants them to be topical. So he is asking what you guys want him to answer, this way he can prepare a short presentation and then answer questions on the topic given.
John posted asking for those to submit ideas on Google+ and then +1 the ideas they like the best.
John wrote:
I'll be setting up next week's hangouts soon -- do you have any preferred topics that we might want to focus on in one of them?
He then added:
These are some great ideas already, thank you! I'd love to go past Penguin & Panda for these topical hangouts since they really only affect a very small part of the sites out there. On the other hand, current best practices & common problems (or myths) sounds like an interesting topic. Duplicate content is also one that comes up in almost every hangout, so maybe we could do something more in-depth on that. I'll set up the hangouts for next week tomorrow, but I'd love to have more topics (or +1's on comments :)) if there's something we should be picking up as a topic.
So give John your ideas at Google+.
Forum discussion at Google+.