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Hi Roy Well in that case then i would be wary of duplicate content & descriptions etc I would really focus on trying to develop content/product descriptions to highlight differences between them This is almost certainly worth watching:  http://moz.com/webinars/ecommerce-seo-fix-and-avoid-common-issues Cheers Dan

What do your customers care about? It's harsh, but take a deep breath and ask yourself if your site name/brand really matters.(Remember those loyal customers will probably be going directly to your site or via a branded search rather than a search for individual products) What's more attractive - "Dave's Widgets" or "Fast, reliable delivery..." The rules are obviously different if you're a big brand with a widely recognised USP. If you include the site name in the meta descriptions are you going to be losing space that you could be using to sell the product/value proposition/benefits? If you do feel the site name is important, is this something you can test before you go ahead and make a site-wide change? (Evidence is better than opinion!)