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Clearspring Technologies
AddThis Indeed: Clearspring Raises $20 Million As It Rides Social Sharing Boom
May 10, 2011
<img src="http://tctechcrunch.files.wordpress.com/2011/05/clearspring.png" class="shot2" /> The name <a href="http://www.clearspring.com">Clearspring Technologies</a> may not be terribly familiar to