@backdraft, we see the change. We were doing very good the last 3-4 days. And today it seems like they hit the "bad" button again. Hours with nealry no traffic are becoming usual, unfortunately.
At least i have to say that Amazon and some big brands do not have this precense in the serps anymore. Hope it sticks. IMO the lifted a Little bit the Panda restricitions so that niche sites come up again.
But it could be that it is due to prepanda rollout, like every time before a Panda roll out.
My personal watch cast "bing" is from yesterday 417.000.000 down to 379.000.000 results.