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I'm sure a few people have been asking this direct question throughout the forums but most of them are masked by indirect questions like "my traffic has dipped" and the like.  Does anyone have a firm confirmation that Panda has hit? My indication that it has hit is that I'm experiencing a ~%30 increase in traffic to my e-commerce client from organic searches after this past weekend.  We haven't made any significant changes to content besides daily postings, but even that doesn't account for a %30 spike that has maintained for 3 days straight. So again, what have you guys experienced?  Anything to support this?

The majority of focus these days seems to be on Google.  This leaves Bing to fall by the wayside, but I do understand why.  Has anyone found any good reference material on Bing and why the amount of pages they index is substantially less than Google? while the sitemaps were submitted to Google and Bing around the same time, my client has ~165,000 / 202,000 pages indexed on Google and ~7,500 / 202,000 on Bing.  Can anyone explain what's going on here or has no real research been done into the area?