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One third-party reported it, but now it’s official: Google+ grew to 10 million in two weeks, with users sharing more than 1 billion items being shared daily. “We’re only at 1% of what’s possible,” Google CEO Larry Page said during this week’s conference call. “Google’s just getting started.” To that end, the Internet giant reported second quarter net income of $2.5 billion, a 36% increase over the same time last year, on sales of $9 billion. (CNNMoney)

* Music-streaming service Spotify launched in the U.S. yesterday after nearly two-and-a-half years of promises and speculation. Why it deserves the hype, and what Spotify investor and Napster co-founder Sean Parker has to say about its stateside arrival. (Fortune and Facebook) * Is Facebook worth $10 billion? (The Wall Street Journal)

* Rumors abound that Apple may refresh the MacBook Air line next week with new Sandy Bridge processors from Intel, a 4 GB of RAM minimum, high-speed Thunderbolt ports, 128 and 256 GB flash-based hard drives, and backlit keyboards. (All Things D)

* According to Flurry Analytics, the overall share of third party projects started on Android devices fell from a high of 39% in Q4 2010 to 36% in Q1 2011 and 28% in Q2. The mobile firm chalks that notable fall-off to the Verizon iPhone and iPad 2 launches. (Fortune)

* How a proposed law could endanger Internet entrepreneurship. (Huffington Post)

* Justin Timberlake, who invested in MySpace last week and Stipple last November, just reportedly put some cash into a stealthy (read: secret) startup called Dekko. Not much is known about Dekko at this time other than it’s goal is “to merge augmented reality with actual reality.” (Business Insider)

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