Bewenched - 3:42 pm on Aug 30, 2012 (gmt 0)

1. Bounce rate up from 48% to 75% 2. Visitor time on site down from 3.48 to 0.35 3. Spam increase and Zombie Traffic 4. Returning Visitors down by 30%

Darn near what we've seen.

1. Bounce rate up from 38% to 49%
2. Visitor time on site down from 2.49 to 2:13
3. Spam increase and Zombie Traffic
4. Visitors down by 30% or more. Returning visitors are actually up a bit.

Since panda/penguin hit we've been working on giving more detailed product information, lessened the links in the navigation.

We've just recently added microdata to help search engines find/display product information properly and changed the size of our image preview from 72x72 up to 200x200 which they click on and get the full size image. We've added better breadcrumbs.

Note: about 3 months before Panda struck we changed the way our large image was displayed, it used to open a pop-up window with it and now we use lightbox.

We use sitemaps for both Google and Bing
We use Google products as well as Bing shopping. (fyi we're now paying for google product listings)

All the things we've done have been to give users better experience with exception of the microdata.