I have been meaning to join Dumb SEO Questions for a while now, but finally got the chance to today. We had a number of great conversations, but I wanted to highlight this one about PPC Not Provided from Google:

Featuring Alistair LattimoreMicah Fisher KirshnerJim Munro and Jenny Halasz, the discussion focuses on risk. Click here to start the video at 45 min 22 sec.

Google Announces Not Provided for Paid Search