tedster - 11:39 pm on Oct 18, 2010 (gmt 0)
The testing (it's not just a poll) was done over a 6 month period turned out extremely strong. I have no doubt that the data were statistically relevant. After all Google does employ many PhDs in statistics.
From what I've seen so far in the server logs since Instant rolled out, predictions that Google had finally jumped the shark did not come true. In fact, the practical effect seems to be a big yawn.