Waterloo Plugins

Social Shares uses the Facebook and Twitter APIs to fetch the total number of shares for each of your posts. The number of shares is stored in your database for any plugins to use. Social Shares can optionally display the number of shares on your posts. The number of shares is styleable. You can use the shortcode <code>[social_shares]</code> anywhere in your posts.
In addition, you can sort your posts by the number of shares. You can make a page that displays your posts with the most shares. Simply add <code>?sort_shares=desc</code> or <code>?sort_shares=asc</code> to the end of any WordPress URL to sort by the number of shares.

Social Shares

Get the number of Likes and Twitter Tweets for each post. Sort your posts by share count or display the share count.

danielfaerber

If you install this plugin on your blog, your visitors get two buttons below your posts and pages:
<ul>
<li>A Facebook “share” button</li>
<li>and a Twitter “tweet” button.</li>
</ul>
These are not the standard Like- and Tweet-Buttons, which also display how many people have clicked on it so far, but basically pure and simple html-links.
DISADVANTAGE:
<ul>
<li>Less interaction.</li>
</ul>
ADVANTAGES:
<ul>
<li>It’s faster. Your blog does not have to contact Facebook’s and Twitter’s servers.</li>
<li>Better privacy. No information about your visitors is sent to Facebook or Twitter. Nota bene: Facebook’s standard like button allows Facebook to track your visitors even if they do not click on it!</li>
</ul>

Fastershare

This plugin allows your visitors to share your posts on Facebook and Twitter, without JavaScript or iFrames.

Social Shares vs Fastershare