FORTUNE -- The report issued Thursday by Chitika Insights calls it "the power of free" -- a reference to the price Apple (AAPL) charged Mac users to upgrade to Mavericks, the latest version its flagship operating system.
Sampling its ad network last week -- five months after Mavericks' release -- Chitika found that 40% of its clients' page views were coming from Macs running Mavericks. That's six percentage points better than Mountain Lion ($19.99) reached on the same ad network after nearly 14 months.
It may be a record for a computer OS. Nine months after Windows 8 came out, it still hadn't achieved 5% penetration (see here).
But 40% pales compared with the upgrade rates on Apple's smartphones and tablets, where after six months, iOS 7 users were generating more than 80% of Chitika's iOS Web traffic in the U.S. and Canada.
"That disparity," Chitika suggests, "is likely at least partially a function of the nature of the desktop marketplace, where computers are typically kept for a longer period of time as compared to mobile devices, and hence may not necessarily be upgrade eligible. Additionally, a larger and much wider range of users in terms of economics, age and other factors regularly browse using desktops and laptops as opposed to smartphones and tablets, which have user bases skewed more tech-savvy as a whole. Finally, unlike on iOS, where users receive a direct prompt to upgrade to the latest OS version, Mac desktop and laptop users were not actively solicited to update to Mavericks."
Sony's new Sony Vaio Pro laptops are lighter than MacBook Airs and (almost) just as thin.
FORTUNE -- Clasp Sony's 13-inch VAIO Pro in one hand, and you'll be impressed by how light it feels. It's even lighter than the most svelte 11-inch MacBook Air.
The Air is obviously far from heavy, but thanks to carbon fiber used throughout the Vaio Pro's body, Sony (SNE) trimmed the weight to 1.92 lbs. for the 11-inch MOREJP Mangalindan, Writer - Jul 9, 2013 9:40 AM ET
Lenovo is the single PC manufacturer that is doing well. And even that company's worldwide sales are flat.
FORTUNE -- Let's say the definition of "PC" is the same one we applied five years ago, before tablets. By that definition, the market seems to be collapsing.
Shipments of PCs in the first quarter fell by 13.9% from the same quarter in 2012. The forecast decline had been 7.7%, according to International Data MOREDan Mitchell, contributor - Apr 11, 2013 2:44 PM ET
Also: why Windows 8 sales are so darned slow; standing desks in the workplace.
McAfee comes out of hiding to talk about life on the run [CNN]
McAfee is so fearful, he says, that he carries up to a dozen disposable cell phones at one time. He estimates he has gone through 200 since he fled more than three weeks ago.
In fact, he only agreed to an interview with CNN after a number MOREJP Mangalindan, Writer - Dec 3, 2012 5:29 AM ET
The Microsoft of the late 1990s wouldn't recognize the Microsoft of 2012 -- for the better. But for every Kinect, there is a Zune.
FORTUNE -- Legends are tough acts to follow, especially when they leave a mess behind. Just ask Steve Ballmer. Ever since joining Microsoft in 1980, Ballmer has toiled in the shadow of Bill Gates. Gates is the one remembered as the legend who turned Microsoft into a formidable MOREKevin Kelleher - Nov 6, 2012 8:04 AM ET
Also: Zuckerberg visits Russia, Paul Allen weighs in on Windows 8, and Sean Parker talks Airtime.
Facebook sells more access to its members [THE WALL STREET JOURNAL]
To amp up the effectiveness of its ads, Facebook in recent months has begun allowing marketers to target ads at users based on the email address and phone number they list on their profiles, or based on their surfing habits on other sites.
It has also MOREJP Mangalindan, Writer - Oct 2, 2012 1:45 PM ET
How Katy Perry inspired LinkedIn's redesign; Facebook's real mobile problem.
The royal Nokia screw-up that shouldn't have been [PANDODAILY]
That gets to the larger problem: The entire phone isn't ready. On stage, Nokia had nothing specific to say about when the Lumia would go on sale. A day later, perhaps after noticing that providing a launch date for its make-or-break phone could be somewhat important to the future of its entire business, the MOREJP Mangalindan, Writer - Sep 10, 2012 6:00 AM ET
The backstory of the struggling cellphone maker's newest devices - and the unlikely executive leading the charge.
FORTUNE -- Since Stephen Elop became CEO of Nokia in 2010 he has made a series of bold moves, from releasing a rally-the-troops memo comparing the flailing mobile-phone maker to a man on a burning platform to hitching the company's future to Microsoft's Windows operating system. His other daring deed? Assigning the crucial task MOREMichal Lev-Ram, writer - Sep 5, 2012 10:35 AM ET
* Pulse, the mobile news reader co-founded by grad students Aksay Kothari and Ankit Gupta, is coming to the desktop. Earlier this morning, the startup launched an HTML5-based version of their reader geared for larger screens. "People who have been using Pulse on their mobile devices have been like, why I can't use it on my computer?" Kothari told Fortune. Pulse now reports over 15 million users, with 250 million-plus stories read through MOREJP Mangalindan, Writer - Aug 9, 2012 1:49 PM ET
How Kickstarter gave these fledgeling fashion designers capital; a deep dive into Windows Phone 8.
Foxconn CEO: iPhone 5 'will put Samsung Galaxy S III to shame' [WIRED]
At a shareholders' meeting Monday, Gou reportedly said that the new model "will put Samsung's Galaxy S III to shame." Gou also reportedly called Samsung "a company with a track record of snitching on its competitors" — a reference to a European price-fixing investigation of the flat MOREJP Mangalindan, Writer - Jun 21, 2012 10:00 AM ET
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