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Does anyone have experience implementing Schema.org markup on e-commerce websites that are already using Power Reviews (now Bazaar)? In Google's documentation they say that it's generally not a good idea to use two types of semantic markup for the same item (reviews in this case), but I wouldn't think that there would be a problem marking up other items on the page with Schema such as price, stock status, etc... Anyone care to provide some insight? Also in a related topic, have you all noticed that Google has really dialed back the frequency in which they display rich snippets for product searches? A few weeks ago the site that I'm referring to had hundreds of products that were displaying snippets, now it seems that only about 10% (roughly) of them are still showing. Thanks everybody.

It looks like the change took place approx. 1-2 weeks ago. Example: A search for "business credit cards" with search settings at "never show instant results" and "50 results per page", the SERP has a total of 5 different domains in the top 10 (4 domains have multiple results). With the slider set at "10 results per page", there are 9 different domains with only 1 having multiple results. I haven't seen any mention of this change, did I just miss it? Are they becoming that blatant about forcing as many page views as possible for the sake of serving more ads?

I track around 1000 keywords for this site, and my rankings in Bing dropped for about half of them on Wednesday. No major changes have been made to the site, rankings are maintaining or improving in Google for a majority of these same terms. The average drop seems to be around 9-12 places, which to me signals more than just standard fluctuation. Anyone else seeing anything strange with Bing this week? Or does anyone have any ideas? I looked for posts about an algorithm change but haven't found anything. Thanks.

My ecommerce company uses Omniture tracking codes for a variety of different tracking parameters, from promotional emails to third party comparison shopping engines. All of these tracking codes create URLs that look like www.domain.com/?s_cid=(tracking parameter), which are identical to the original page and these dynamic tracking pages are being indexed. The cached version is still the original page. For now, the duplicate versions do not appear to be affecting rankings, but as we ramp up with holiday sales, promotions, adding more CSEs, etc, there will be more and more tracking URLs that could potentially hurt us. What is the best solution for this problem? If we use robots.txt to block the ?s_cid versions, it may affect our listings on CSEs, as the bots will try to crawl the link to find product info/pricing but will be denied. Is this correct? Or, do CSEs generally use other methods for gathering and verifying product information? So far the most comprehensive solution I can think of would be to add a rel=canonical tag to every unique static URL on our site, which should solve the duplicate content issues, but we have thousands of pages and this would take an eternity (unless someone knows a good way to do this automagically, I’m not a programmer so maybe there’s a way that I don’t know). Any help/advice/suggestions will be appreciated. If you have any solutions, please explain why your solution would work to help me understand on a deeper level in case something like this comes up again in the future. Thanks!