Streamed live on Oct 26, 2012 by John Mueller:

•  01:11 Question Posted: about using CSS values to cloak.... no it is hidden text...do not read HTML comments
• 03:06 Question Posted: cleaning unnatural links with disavow...try to remove....disavow is last resort
• 04:50 Question from Hangout user: should crawlers from spammy sites be blocked... John...only if it matters to you
• 07:10 Question Posted: Can affiliate links hurt your rankings...John: possibly use NoFollow
• 08:17 Question from Hangout user: But affiliate will not be penalized? possibly
• 09:28 Question from Hangout user: Is using Googlebot robots tag better than the other meta?  John gives good examples of using both
• 10:42 Question Posted: Can adsense ads have negative affects on the rankings John....talks about above the fold content (GooPLA)
• 11:55 Question Posted: does too many ads cause Panda? John.... basically see above ;-)
• 13:12 Question Posted: Why does Google display author markup from internal pages but not home page?... John: to update changes made in markup.. the page must be indexed
• 14:12 Question Posted: question about getting UK results on computer in Poland
• 16:03 Question Posted question about regional domains ranking better than top level domains eg somesite.on.ca is a site in Ontario canada?
• 22:52 Question Posted: should domain extension match the site...for instance .edu a school? no doesn't matter
• 23:09 Question Posted: question about using a number of parameters...Jorhn said use rel=canonical and prev. next
• 23:42 Question Posted: question about worrying about lots of 404 pages? no... takes a while to re-crawl
• 24:50 Question from Hangout user: discussion about webmasters being afraid to link
• 25:56 Question from Hangout user: are outbound links an SEO signal
•  27:09 Question Posted: discussion of using templates with links to spammy sites...John..make sire they are not hidden
• 29:16 Question from Hangout user: how do you report spammy template developers?