How much does it cost to build the world’s hottest startups?
The Next Web
DECEMBER 2, 2013
Founder Kevin Systrom launched Instagram with 25,000 beta users on October 6, 2010; two years later, the app continues to see massive growth, recently reporting 150 million active users. Design & Dev Entrepreneur Social Media Analysis and Opinion Investigations' 8) Angry Birds. Image credit: bloomua / Shutterstock.
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