This instruction will guide you through adding product reviews feature to your Ecwid store using Google Friend Connect. Once you do the steps below your customers will be able to rate and review your products.
Demo: http://www.ecwid.com/playground/friend-connect (try to open any product)

1. First of all go to http://www.google.com/friendconnect. If you have a Google account, sign in using this account. If you don't, create a new one for yourself.
2. The next step is adding your site. Find the "Add new site" button and click it.

3. The following form will appear. Enter your website name and URL. Then press "Continue"

4. You will see the following message.

5. Click the "Gadgets" link in the right column. A page with Google Friend Connect's gadgets will appear.

6. Click the "All gadgets" link.

7. You will see a page with many gadgets. Find "Rating and reviews". Click on it.

8. Now you should configure your review gadget. Set "Scope" to "Id" and "Id" - to "TEST".
We also highly recommend enabling the "Allow anonymous posts" option, so that all your visitors can review your products without logging in to their Google Friend Connect's accounts.

Choose the gadget's size and colors.


9. Then click the "Generate code" button.

You will see the following text area with JavaScript code. Save it to any text file.

10. Find the following line in the code:
id: 'div-8863987984344264942'
Save the value between the quotes. It is your review layer's ID. It should look like div-1609998933528189132 or div-8863987984344264942, etc.
11. Replace the line
google.friendconnect.container.renderReviewGadget(
with this one
ecwid_generate_widget(
12. Download the ecwid_gfc_reviews.js JavaScript file. Upload this file to the web directory of your site. Usually it's httpdocs or htdocs or public_html directory.
13. Insert the following JS code after the Ecwid code:
<script type="text/javascript">
var ecwid_last_hash = '';
var ecwid_interval = false;
var ecwid_gfc_params;
var ecwid_gfc_div_id = 'div-NNNNNNNNNNNNNNNNNNNNNN';
</script>
<script src="ecwid_gfc_reviews.js"></script>
Replace div-NNNNNNNNNNNNNNNNNNNNNN with the review layer's ID you got on step #10. For example, it may look like:
var ecwid_gfc_div_id = 'div-7668036063563935972';
14. Insert the modified JS code of the review gadget to where you want to show the reviews. An example of such a code (you will have a different div/layer ID and site ID):
<!-- Include the Google Friend Connect javascript library. -->
<script type="text/javascript" src="http://www.google.com/friendconnect/script/friendconnect.js"></script>
<!-- Define the div tag where the gadget will be inserted. -->
<div id="div-8863987984344264942" style="width:282px;border:1px solid #cccccc;"></div>
<!-- Render the gadget into a div. -->
<script type="text/javascript">
var skin = {};
skin['BORDER_COLOR'] = '#cccccc';
skin['ENDCAP_BG_COLOR'] = '#e0ecff';
skin['ENDCAP_TEXT_COLOR'] = '#333333';
skin['ENDCAP_LINK_COLOR'] = '#0000cc';
skin['ALTERNATE_BG_COLOR'] = '#ffffff';
skin['CONTENT_BG_COLOR'] = '#ffffff';
skin['CONTENT_LINK_COLOR'] = '#0000cc';
skin['CONTENT_TEXT_COLOR'] = '#333333';
skin['CONTENT_SECONDARY_LINK_COLOR'] = '#7777cc';
skin['CONTENT_SECONDARY_TEXT_COLOR'] = '#666666';
skin['CONTENT_HEADLINE_COLOR'] = '#333333';
skin['DEFAULT_COMMENT_TEXT'] = '- add your review here -';
skin['HEADER_TEXT'] = 'Ratings';
skin['POSTS_PER_PAGE'] = '5';
google.friendconnect.container.setParentUrl('/' /* location of rpc_relay.html and canvas.html */);
ecwid_generate_widget(
{ id: 'div-8863987984344264942',
site: '17571688792467677624',
'view-params':{"disableMinMax":"false","scope":"ID","allowAnonymousPost":"true","docId":"TEST","startMaximized":"true"}
},
skin);
</script>
That's it. Save the changes and reload the page where your Ecwid store is installed. If you open any product page, the review form will appear.
You can manage all new reviews in the Google Friend Connect's backend.