courier - 8:21 am on Oct 14, 2011 (gmt 0)
Definately a change, and still ongoing. Competitive keywords seem to be at the forefront. One site that has been sitting #1 for a long time down to #7 within the last hour, perhaps going to bounce back.
How can this be a good user experience from Google, if on a search yesterday a user finds this site and today he cannot? Surely this stinks of double standards.