Research firm SNL Kagan claims ringtones sales fell from $714 million in 2007 to $541 million in 2008, a 24% drop. The company also estimates that ringtones accounted for 63% of total US mobile music revenues in 2008, down from 80% in 2007.
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Tools: Kaiber
In the year or so since its launch, AI startup Kaiber has been making waves,…