Earlier quoted context omitted.
"Inferring privacy preferences for new software, based on prior actions in old software, is a recipe for failure." From this thread: http://news.ycombinator.com/item?id=1121034 Anyways, here is my take. Buzz isn't a new product so much as it's a new feature of Gmail. It's as much a new product as any new feature of Gmail is. It's also tied into most of the areas Gmail is, and tied into the rest of Google, and uses Go…
Any new feature, product, whatever that exposes private information should be opt-in. Period.
This is the question: if up until now, you had an option that set things to 'public', but they weren't really public, should a new feature unset your previous choices? Should a new feature change your privacy settings?