Maybe i'm just naive...Why do we care if it is a 38 year cookie? In my opinion, there are two parts of this...
1)If Google is NOT divulging this information, why do we care whether it's a one day or 100 year cookie? Doesn't make any difference.
2)If Google IS divulging this information, it doesn't make any difference either that it is a 38 year cookie or a 38 day cookie! It's bad either way! What am I missing?
My opinion is that Google feels that this is an important addition to their search engine, and if it was Opt-In, how many people are going to know enough about it to KNOW to Opt-In? Or what exactly they are Opting in TO?