In a little more detail...

What is AddThis?
AddThis (http://www.addthis.com) is the universal sharing platform for all content on the Web. We create tools, which make it easy for anyone to share any piece of online content anywhere they want.

Nothing helps us more when we hear from you directly about how we can make our product better. Will you please send us some feedback. You can do that through our Support portal. - http://www.addthis.com/support