Apple Finds It Difficult to Divorce Samsung  —  Apple AAPL +0.70% is finding that breaking up with Samsung005930.SE +0.22% is hard to do.  For evidence, look no further than Apple Inc.'s effort to find a company other than ferocious rival Samsung Electronics Co. to make the sophisticated chip brains used in Apple's iPads and iPhones.

Yahoo To Sunset AltaVista, Axis, RSS Alerts, and Nine Other Products, Some As Soon As Today  —  Yahoo under Marissa Mayer is taking a page from her old employer, Google, and sunsetting 12 products, with some starting as soon as today.  Included are AltaVista and other search products …

The State of Google Reader Replacements  —  With Google Reader shutting down on 1 July 2013, Josh Centers takes a look at the alternatives that have sprung up to replace it.  We report on the best of the lot, and which third-party RSS clients will still be viable after the shutdown.

Shutterstock Creates First Silicon Alley Billionaire  —  Jonathan Oringer, the founder of Shutterstock Inc., became a billionaire today as shares of the world's largest stock photo and video marketplace reached a record high.  —  Oringer, 39, owns about 55 percent of Shutterstock …

A Week After Instagram's Video Launch, Vine Sharing Tanks On Twitter  —  It's now been a full week since Instagram added video recording to its popular camera app, and it's already had a dramatic impact on its main competitor:  —  Vine sharing on Twitter has tanked.

Google+ Photos gets an option to move images between albums, new Download button, and faster uploading  —  Google+ turns two today and Google has already redesigned its buttons and badges, but that's not all.  The service is also getting some new features specifically centered on photos.

Digg Reader open to the public with web and iOS apps  —  It's later than Betaworks promised, but Digg Reader has finally opened up to the public and the service is integrated into Digg's iOS app too.  Digg's hotly-anticipated RSS reader has been in beta for about a week, after a development period of about three months.

New data: Samsung gaining ground on Apple in smartphone market share  —  As the smartphone wars rage on, the industry's two major hardware players continue to gain market share in the U.S., according to new numbers from comScore.  —  Samsung and Apple are the only major OEMs whose market share grew …

Amazon to launch virtual art gallery  —  The retail giant's new art site would resemble Amazon Wine, which launched last fall  —  AMAZON.com is expected to launch an online art gallery later this year.  The online retailer of books, electronics and apparel aims to offer over 1,000 art objects …

Google Sues IRS for $83.5 Million Tax Refund  —  Google Inc. (GOOG), owner of the most popular Internet search engine, sued the U.S. Internal Revenue Service for an $83.5 million refund, claiming it was improperly denied a deduction for a 2004 stock transaction with America Online Inc.

How Do You Break Into iPhone App Store Top 50?  Try 23K Free Daily Downloads, 950 Paid, Or $12K In Daily Revenue  —  An iPhone app needed 23,000 free downloads per day to reach spot number 50 in the top Free charts in the Apple App Store, says mobile app analytics firm Distimo …

Google adds native Microsoft Word and Excel file editing to latest Chrome OS build  —  Google has added native Microsoft Office file editing to the dev channel for Chrome OS.  The addition means Chrome OS users on the latest build of the company's browser-based operating system can now experiment …

San Francisco Officials Suggest Significant Changes Needed for Apple's New Flagship Store Proposal  —  Last month, Apple submitted plans to relocate its flagship San Francisco retail store three blocks north, putting the new store directly on Union Square, the heart of the city's high-end shopping district.

Research In Motion's Stock Falls 27% on After Troubling BlackBerry Numbers  —  BlackBerry Maker Reports Surprise Loss, Fewer Shipments Than Expected … Thorsten Heins, president and CEO at BlackBerry holds up the new BlackBerry 10 mobile device at a conference in March.