tedster - 2:01 pm on Oct 20, 2010 (gmt 0)
Joe, the post above from BillyS addresses your point - this isn't the same thing as A/B testing where you get the testers for free - not for $75 an hour.
I used to conduct market research, this is a very big sample for this type of test. This is qualitative research, not quantitiative...
I'm not a fan of many things Google is doing, but it's important, IMO, to see things clearly and not with automatic anti-Google prejudice. That prejudgment undermines our ability to understand what's going on with the giant online influence.