I think the best reference you can make is Target's failed attempt to try and copy Amazon's customer review process. To contextualize the presentation about it :
Spool examines why this system works so effectively for Amazon but
tends to fail for Target. Amazon and Target.com both sold a few
million copies of the popular book “Harry Potter and the Deathly
Hallows”. Yet, if you look at this book’s Amazon page, there are over
3,000 reviews for the book, where the Target.com book page only has 9
reviews. It is obvious that Amazon users are much more likely to post
review than the typical Target user. In fact, if you look at the
quality of Amazon reviews vs. Target reviews, the Amazon reviews are
also much more useful. Amazon reviews are often well written,
detailed, and provide a lot of useful pro and con information about
the product. Target reviews are typically shorter and contain less
useful information than their Amazon counterparts. The fact that
Target gets less review for each item also makes the reviews less
useful. People are more likely to write a poor review of a product if
they have a bad experience than write good reviews when they have a
good experience. Thus, Target.com has a lot of alarm clock that are
rated very low as not a lot of people are revved up to write a review
of that new alarm clock they just bought. Amazon, on the other hand,
typically gets a very large amount of reviews for its products. Since
products on Amazon tend to get a large number of reviews, there is
more likely to be high quality reviews of the a product on Amazon. A
product with only 9 reviews on Target is not going to have the same
reliability of information for a user to decide to buy or not buy a
product.
Also go through these links to get some more inputs:
- Myth #20: If it works for Amazon, it will work for you
- 10 Reasons Not to Copy Amazon
- CopyCat design
- Should You Copy a Famous Site's Design?