One of the best ways to promote affiliate products
is to create a 
product review lens.However, there are ways to make such a review
effective in terms of affiliate sales.
Rosalind Gardner, author of the 
Super Affiliate
Handbook, has written a landmark article on
this topic:
How to Write a Product Reviewby 
Rosalind Gardner                  How do you choose the products you buy?
Do you simply                  accept as gospel truth all the
good things a merchant says about                  their own
product? Or, do you ask your friends' opinions
and look                  for independent product reviews
before opening your wallet?                                
If                  you're a savvy consumer (which of course you are),
then you put                  more stock in your friends' opinions
and independent product reviews.                                 As                  affiliate marketers,
we become much more successful when we approach
our site visitors as friends and take the attitude that
they too are savvy consumers
 
From                  that standpoint, an affiliate's real work is to
pre-sell our merchant                  partners' products by writing fair
and balanced reviews, also                  known as endorsement letters.
Sure,                  writing a review for each product takes a little time
and effort,                  but it's an activity that sets the super affiliates
apart from                  their less-super counterparts in terms of
rewards... read 'income'.                               
Product                  reviews can be either stand-alone or
comparative. The                  first type focuses on a single product,
while the second is an                  evaluation of similar items that
allows readers to choose which                  product best suits them.
Before                  you begin to write a product review, you'll
need to evaluate the                  product. (Nothing like stating the
obvious, eh?)
I                  prefer to endorse products that I've actually used.
However, buying                  a product isn't always feasible.
If that's the case, affiliate                  managers will often grant
'proven' super-affiliates access to                  products for their
review.
That's especially true of information                  products and
ervices that are delivered online, such as internet
dating services.
But                  what if you're not yet a super affiliate, and can't
fathom a basement                  full of treadmills to review for
your exercise site?                Well,                  do what your customer
would do if product reviews didn't exist                  on the
Internet - go to the store and test those treadmills
out!
And                  how do you review acne medications for your
skin care site if                  you don't have acne? Surely, you
have some friends with (previously)                  pimply-faced
teenagers... ask them to tell you what worked for
               them.              
If                  you can't find out that way, search Google
for "consumer                  reviews" + "acne medications".
Read as many as                  you can to come up with three
to five effective products (that                  have affiliate programs).
Once                  you've collected information about the product,
it's time to start                  writing that product review.
The                  structure for a product review is simple,
containing an introduction,                  overview and summary.
The                  introduction consists of a few sentences outlining
the problem                  and introduces a possible solution for
the reader, without going                  into detail.
The overview describes the product's promise,
a description                  of how the product is used, as well as
its effectiveness and value.
The summary is almost a repeat of the introduction,
and contains                  a strong recommendation for purchase
based on your conclusions.
To                  simplify the review-writing process, I ask myself
the following                  questions when writing product reviews
for my own affiliate sites.
1.                  Who is my reader and what is their problem?
              2. What does the product                  promise?
              3. How well does the product                  solve the problem?
    What does it do? How does it work?
              4. Does the product offer                  good value? (Would I buy
     this product?)             
Let's look at each question in turn.
The                  first question asks, "Who is my reader and what
is their                  problem?"                If                  acne is your reader's problem and
your site visitors are adults,                  you probably want to avoid
terminology like 'Zap those zits!'                  and use more
age-appropriate language.                Remember                  too, that 'zits'
aren't really the problem.
The real problem is                  how your reader feels
about having pimples all over their face                  and
how that affects their life.
If                  you've experienced the problem yourself, say so.
Describe your                  experience, and show understanding
and compassion for the reader's                  plight. Speaking from
real experience earns your readers' trust                  which always
improves sales rates.
If 
you have trouble figuring out how your reader might
be affected                  by his problem, then you can research
that online too.                For                  example, I searched Google for
"hate acne" and came                  across Acne.org, where one
young woman lamented, "My sh%tty                  skin is seriously
ruining my social life and my relationships                  with men.
I'm avoiding it all just cuz I don't want to show my                  face.
Its really sad. I also spend a lot of money on make up'
I'm not even asking for the most perfect skin (even
though it                  would be nice) but even if I was limited to
just a couple zits....and                  then it would take me under
30 mins to get ready ....I would never                  be home, and
I would go back to living the life that I ohh so                  miss."
That                  gives you a pretty clear picture of how she feels,
right?                Now                  address those concerns using emotive
terms and you'll improve                  your conversion rates.
Here's                  an example.                Rather                  than say, "Product A will
cure your acne", start with                  a question that appeals
to your reader's emotion, such as "Is                  acne ruining your
social life? Scared to leave the house - or                  even show
your face? There IS a solution to your plight."
That                  introduction brings us to the next question
which is, 'What does                  the product promise?'                Does                  the
product cure the problem? Does it work faster, or with
less                  hassle and expense?                You                  found answers to that
question during your product research.
In                  this section you simply summarize your findings.
Next,                  answer the third set of questions, "How well
does the product                  solve the problem?", "what does it
do?" and "how                  does it work?" based on your product
research.
Results                  are the most important information,
so it's not necessary to provide                  nitty gritty details
about how you use the product or what it's                  made of or
how it is packaged, etc. unless the merchant does not
supply that information on their site, and you consider
the information                  of importance to your reader.
Too,                  we're all aware that no product is perfect, so don't
go overboard                  and write a completely glowing, one-sided
review. To make the                  product review 
balanced and fair,
detail what you do and don't                  like about the product. If you
want to avoid negative statements                  when outlining your
dislikes, try phrasing the sentence like "although                  I'd
prefer a slightly less greasy formula..." or "although                  the
bottle lacks a pump dispenser..." and finish on a positive
note.
Lastly,                  
make a value statement. For example,
"While Product A and                  B both eliminate most acne problems
in 30 days, Product A wins                  our 'best value' award priced
at $20 less per bottle. Or, if you're                  writing a single product
review, you could say something like,                  "Acme's Acne Product
would be great value even at twice the                  price, but at this price
it can't be beat!"
For                  even better conversions, be sure to 
include a
product                  graphic on your product review webpage,
and a 
testimonial or two                  from users that you solicit
through your site or use with permission                  from your
merchant partner's site.
In                  summary, tell your visitors what you would say
to a friend if                  you were telling them about a product
that you found and liked.                  That approach will make
writing reviews easier and your friendly                  attitude
will push your conversion rates through the roof!
                               ©                  Copyright Rosalind Gardner, All Rights Reserved.
Article                  by Rosalind Gardner, author of the best-selling
"Super                  Affiliate Handbook: How I Made $436,797 
in One Year Selling Other                  People's Stuff Online". [Emphasis added]**********************************************
Ron Passfield is a Top 100 Squidoo Lensmaster and
Giant Squid. He provides free resources for Squidoo
affiliate marketing on his Squidoo lens:
http://www.squidoo.com/squidoomarketingstrategiesTo learn more about Squidoo Affiliate Marketing
check out:
http://www.squidooaffiliatemarketing.com/Subscribe to Ron's free Squidoo Marketing e-course:
http://www.smsecourse.squidoomarketingstrategies.com/Ron is the author of the ebook:
Squidoo Marketing Strategies********************************************