A Lot of studies online talk about an increase in 20-30 percent organic traffic using schema.org.
Schema.org provides a collection of shared vocabularies webmasters can use to mark up their pages in ways that can be understood by the major search engines: Google, Microsoft, and Yahoo!
Some Relevant Tags for E commerce tags:
http://schema.org/Product
e.g.:
<div itemscope itemtype="http://schema.org/Product">
<span itemprop="name">zinog 55 inch TV</span>
<img src="zinog-tv-55in.jpg" alt="">
<div itemprop="aggregateRating"
itemscope itemtype="http://schema.org/AggregateRating">
Rated <span itemprop="ratingValue">3</span>/5
based on <span itemprop="reviewCount">11</span> customer reviews
</div>
http://schema.org/Offer
e.g.
<div itemprop="offers" itemscope itemtype="http://schema.org/Offer">
<span itemprop="price">$600.00</span>
<link itemprop="availability" href=" http://schema.org/OutOfStock ">Out of Stock
</div>
http://schema.org/Review
e.g.
<div itemprop="reviews" itemscope itemtype="http://schema.org/Review">
<span itemprop="name">Yo Camera</span> -
by <span itemprop="author">Yo Boss</span>,
<time itemprop="publishDate" datetime="2012-01-15">Jan 15, 2012</time>
<div itemprop="reviewRating" itemscope itemtype="http://schema.org/Rating">
<meta itemprop="worstRating" content="1">
<span itemprop="ratingValue">3</span>/
<span itemprop="bestRating">5</span>stars
</div>
<span itemprop="description">The Yo Camera is a revolution.</span>
</div>
This is interesting for SEO, just thought of adding it here, How Google perceives web pages.
http://www.google.com/webmasters/tools/richsnippets
Ref:
http://schema.org/
