Graywolf is writing a useful series of posts on the topic of SEO for Product Reviews:
‘About 18 to 24 months ago Google started giving pages with “keyword review” or “keyword reviews” favorable rankings in it’s algorthym for “keyword” searches. It’s hard to say whether they are devaluing on page factors like “add to cart”, “buy now” or “purchase now” in text, alt text, or image names, or if Google is giving a higher score to pages with more unique content, which consumer reviews would be. While I haven’t tested extensively to isolate the two factors, I can say I get better results on websites with reviews than websites without….’
