A WebmasterWorld thread has some SEOs and webmasters talking about a possible Bing index or algorithm update that took place yesterday.
These are webmasters and SEOs who joined the forum back in 2003. So they have some history.
One said:
Today at Bing an older site I have finally made it to page one number one for a desired term. A newer site (one year old) jumped from page five to mid page two for a desired term. I have an aggressive link building campaign in place (mostly articles) so am not sure if that's the reason, or Bing is going through an algo change. Anyone else seeing changes in their Bing placements?
The other replied saying his ranking remained the same but the ones below him did shuffle around a bit.
Did you notice traffic or ranking changes related to Bing?
The last noticed possible Bing Search update was in September 2010.
Forum discussion at WebmasterWorld.