Nintendo seems to have a knack for repeat performances. Nintendo DS? Quickly supplanted by the DS Lite -- and the DSi didn't last too long either before it was succeeded by the DSi XL. Even the 3DS saw a revision, when it was supersized last summer. These redesigns typically don't change more than the device's size, but when the 3DS XL was announced, some gamers were left wanting. Didn't the original 3DS get an accessory specifically to address the lack of a second analog pad? Why didn't Nintendo take the opportunity to add dual-analog controls? Well, if that happened, Nintendo couldn't release an encore Circle Pad Pro accessory, could it? Let's take a look at the 3DS XL Circle Pad Pro and see what's changed.

Sometimes, more medical information is a bad thing. The influential United States Preventive Services Task Force recommends against most women getting genetic screenings for their susceptibility to breast cancer. Why? Because the tests are imperfect: for every woman who gets tested for genes associated with onset breast cancer, even more will falsely test positive, leading spooked patients into needless surgery or psychological trauma. Super cheap genetic testing from enterprising health startups, such as 23andMe, have complicated cancer detection for us all by increasing the accessibility of imperfect medical information.

After discovering a mutated BRCA1 gene, known to increase the likelihood of breast cancer 60 to 80 percent, actress Angelina Jolie underwent a radical preventive double mastectomy. Her brave confession in the New York Times brought much needed attention to breast cancer awareness, but it’s dangerous in the hands of a statistically illiterate population.

For instance, as New York Times statistical guru, Nate Silver, once reminded me, while breast cancer mammograms are 75 percent accurate, a woman who tests positive only has about a 10 percent chance of actually getting cancer. Since the vast majority of women don’t have cancer, there are far more women who will falsely test positive (here is a helpful blog post with the numbers worked out). Most importantly, surveys reveal that many people don’t understand the math behind false positives in cancer testing, and may make uninformed decisions as a result.

Info about the Iconia W3 Windows 8 tablet has already slipped out a few times, and now this 8.1-incher is live on Acer's Finnish website. While there's no mention of price or availability, the specifications list matches the previous leaks. You're looking at Windows 8 Pro running atop an Intel Atom Z2760 with integrated graphics for up to eight hours, aided by 2GB of RAM, a maximum 64GB of storage, 802.11 b/g/n WiFi and Bluetooth 4.0. Port-lovers will be pleased to find Micro HDMI and micro-USB hookups onboard, as well as a microSD slot. Microsoft Word comes pre-installed, but there's no concrete info about the optional full-size keyboard dock -- other than it existing, of course. It'll likely be closer to June when we'll be staring at this 1.1-pounder's 1280 x 768 touchscreen and front-facing webcam in the flesh, so you'll have to hit up Acer directly at the source link for now.

That cat's out of the bag a day early, it seems. Yahoo's board has approved a $1.1 billion cash deal to purchase the blogging site Tumblr, according to The Wall Street Journal. We were expecting Yahoo to announce the acquisition during tomorrow's NYC media event -- CEO Marissa Mayer may instead use the last-minute gathering to detail the company's plans for integrating the popular platform. It's unclear how Yahoo intends to utilize its latest procurement, but with a 10-figure price tag now public, we can only imagine that Tumblr will be put to good use. We'll be covering tomorrow afternoon's event live, so stay tuned for more details from New York City.

A new Lumia phone from Nokia, this year's Google I/O and BlackBerry Live -- yep, it was a pretty hectic week for us, but also a good seven days for tech news. Even if Google didn't have any truly new hardware for us, it's started up its own on-demand music service, gave us more details on Google Glass, redesigned its Maps and, well, it was a very long keynote. Join us after the break for a numerical breakdown of that and the rest of the week's big news.

Per-month pricing for Google Music All Access: $9.99 Per-month pricing for Spotify Premium: $9.99 Time spent liveblogging the Google I/O 2013 keynote: 3 hours 43 minutes Length of Peter Jackson's The Hobbit: An Unexpected Journey: 2 hours 49 minutes Battery remaining on our Google Glass unit by the end of the keynote: 17 percent Number of times Google CEO Larry Page said the word "sad" during his keynote appearance: 9 Price of a 16GB "stock Android" Samsung Galaxy S 4: $649 Price of last year's LG Nexus 4 (16GB): $349 YouTube's monthly subscription fee for new pilot channels: $0.99 Current Sesame Street channel subscribers on YouTube: 600,464 One, two, three, four, five, six, seven, eight, nine, 10, 11: 12

Amount Google earned from ads on PSY's "Gangnam Style" video: $8 million Number of Android device activations to date: 900 million Apps installed from Google Play: 48 billion Apps downloaded from Apple's App Store: 50 billion Estimated number of Nokia phones (feature and smart) sold last year: 336 million Price of the Nokia Lumia 925: 469 euros / $605 Price of the Nokia Asha 501: $99 Screen size (in inches) of the Asha 501: 3 Screen size (in inches) of the new QWERTY BlackBerry Q5: 3.1 BlackBerry's smartphone market share, according to IDC: 2.9 percent Tablets sold by ASUS in Q1 2013: 3 million Tablets sold by BlackBerry in Q1 2013: 370,000 Years left for the tablet market, according to BlackBerry CEO Thorsten Heins: 5

Editor’s note: Glenn Solomon  is a partner with GGV Capital. Some of his recent investments include Pandora, Successfactors, Isilon, Domo, Square, Zendesk, Quinstreet, and Nimble Storage. He blogs regularly at www.goinglongblog.com, where the focus is on growth stage entrepreneurs who are thinking big. Follow him on Twitter @glennsolomon.

Stanford-born and Seattle-based Tableau Software (DATA) enjoyed a tremendous debut on the public markets on Friday, closing on its first day of trading at over $50/share, up over 60 percent from its $31/share IPO price. The company raised over $250 million through the sale of approximately 14 percent of the company, and its enterprise value now sits at approximately $2.5 billion.

For the pundits who’ve been arguing that the tech IPO landscape is in crisis, deals like Tableau serve as a powerful reminder that the public market is eager for certain tech companies. In fact, over the past year or so, there have been several other high-profile tech IPO winners, such as Workday, Splunk, Palo Alto Networks and ServiceNow.

Google is under fire in the UK for its tax practices in the country, and a new key witness (who spoke to The Sunday Times) might put them in deeper hot water when he hands over a reported 100,000 emails and documents to the British Revenue & Customs (HRMC) services. Barney Jones, a former Googler who was at the company between 2004 and 2006, says he has material proof that Google’s London sales staff which would negotiate and close sales for the UK market, despite claiming its Dublin HQ handled finalizing all deals.

Jones was prompted to speak out by testimony given to the Commons Public Accounts Committee (PAC) last week by Google VP Matt Brittin, who said that London-based Google staff were never closing any ad sales deals, though some selling efforts were made there. Brittin had previously gone on record in November 2012 with statements asserting that no one in the London office was doing any kind of ad selling.

The matter of where the deals were finalized is especially important because if a sale closes in London, it’s likely they’d be taxable in Britain, rather than in the extremely low tax-rated Ireland. Jones told the Sunday Times that Google is fully aware of this, yet there are still records of Google staff closing major deals from companies like eBay and Lloyds TSB, but Google doesn’t seem at all certain that any of the documentation will absolutely prove that it has done anything strictly against UK tax law, according to a statement provided by Google Direct of External Relations Peter Barron to the Sunday Times.

YouTube turns eight years old today, reminding each of us in some odd way how young or old we really are. Remember, the company launched back in 2005, the same year that Michael Jackson was found not guilty of child molestation, and Lance Armstrong was winning his seventh Tours De France, and Arrested Development was still on the air.

A lot has changed since then, but YouTube’s growth remains strong as ever. YouTube announced that its community now uploads more than 100 hours of video to the platform every minute. Minute. That’s the equivalent of four days worth of video every sixty seconds.

But of course, the supply makes sense when you consider the demand. YouTube claims that more than one billion people across the world come to YouTube for content each month, which comes out to nearly one in every two people who have access to the internet.

YouTube turns eight years old today, reminding each of us in some odd way how young or old we really are. Remember, the company launched back in 2005, the same year that Michael Jackson was found not guilty of child molestation, and Lance Armstrong was winning his seventh Tours De France, and Arrested Development was still on the air.

A lot has changed since then, but YouTube’s growth remains strong as ever. YouTube announced that its community now uploads more than 100 hours of video to the platform every minute. Minute. That’s the equivalent of four days worth of video every sixty seconds.

But of course, the supply makes sense when you consider the demand. YouTube claims that more than one billion people across the world come to YouTube for content each month, which comes out to nearly one in every two people who have access to the internet.