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BIA Kelsey
BIA/Kelsey: Social Media Advertising Topped $2 Billion In 2010
May 02, 2011
Leena Rao
<img src="http://tctechcrunch.files.wordpress.com/2011/05/bia.jpg" class="shot2">Further evidence that advertising on social networks (a.k.a. Facebook) is a booming business. BIA/Kelsey <a href="http: