(flickr.com/rasamalai)

Pinterest is valued around $200 million with huge traffic and almost no revenue [Wall Street Journal]

Allyson Shontell profiles Dennis Crowley based on his Tumblr personal blog [Business Insider]

It took Twitter a year to switch all users over to the new design [The Next Web]

Security flaws in Google Wallet [PC World]

Google's algorithmic approach to funny YouTube videos [CNN]

Apple will start requiring apps to ask explicit permission to access user contacts [AllThingsD]