WordPress Social Ring (Facebook Like, Google +1, ReTweet, LinkedIn And Pin It) - Rating, Reviews, Demo & Download
Plugin Description
Let visitors share posts/pages on Facebook, Twitter, Google+, LinkedIn and StumbleUpon.
From admin page you can choose which button display: Facebook Like, Facebook Share, Google +1, Google+ Share, Twitter, Pin It, in Share and StumbleUpon.
You can also choose on which pages display them: Home, Posts, Pages, Categories and Archives.
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http://wordpress.altervista.org/category/wordpress-social-ring/