If you installed stumble toolbar in your browser, you can see a white bubble button. It is called stumble review button. When you browse a website url, if you press this bubble, you can see the reviews regarding that website by different stumbleupon users. Take your wordpress blog posts and click on stumble review bubble, you can see others reviews about each of your blog post.
If you are getting more reviews for your wordpress blog post, it is the time to reveal or expose your reviews in front of your blog readers.
Here is a wordpress plugin which shows your post reviews by stumble users. If you are using wordpress widget, just activate stumble review widget and add to you sidebar after download the plugin files from http://wordpress.org/extend/plugins/stumble-reviews/
If you are not a wordpress widget user, add the below code in Template Editor.
<?php wp_stumble_review_template() ?>
If you want to add stumble review on your sidebar use the below code:
<?php simple_sumble_review_template() ?>
See the screen shot when i activated the stumble review plugin and added the code <?php wp_stumble_review_template() ?> in my single.php file just above the comments area ( <?php comments_template(); ?> )
(Screenshot of sajithmr.com after installing stumble reviews plugin)