CainIV - 5:10 am on Jan 6, 2010 (gmt 0)

Shouldn't caffeine be out by now, noticeable and stable

Alot of people are under the impression that there should be something to notice. And perhaps there will / would be.

However, Matt Cutts at Pubcon did of course mention that since this is a change under the hood, he didn't expect much change in the way the regular user would see the SERPs.