Christina Berk

How to Tell If the IRS Is Eyeing You

cnbc.com — The agency now keeps an eye out for online discussions about nonpayment or underpayment of taxes, and even sale prices of goods on sites like eBay that don't match what taxpayers report. In a world where companies like Amazon can keep tabs on consumers' online activities, the shift by the IRS is reasonable, says Edward Zelinsky, a law professor at Cardozo Law School.

The World's Most Dangerous Waters

cnbc.com — Here are the world's most pirate-infested waters, and stories of individual attacks from each area.

Art Is the Next Gold: Novogratz

cnbc.com — Record Auction at Sotheby's Wednesday, 15 May 2013 | 7:45 AM ET The high-priced art market may be poised for a fall, according to a top investor. Appearing on CNBC's Squawk Box this morning, Michael Novogratz of Fortress Investment Group said the art market has all the signs of speculation and could see a correction similar to the recent drop in gold.

Macy's Beats on Earnings; Hikes Dividend

cnbc.com — Macy's reported quarterly earnings that beat analysts' expectations on Wednesday, with strong sales that allowed the company to hike its dividend. After the earnings announcement, the company's shares rose by more than one percent in pre-market trading. (Click here to track the company's shares following the report.)

Why Angelina Jolie's Op-Ed Matters

npr.org — Pop culture does not mean celebrity culture; I have perhaps said this more often than anyone you're going to meet. Who dates, who gets a divorce, who has a tantrum, who has surreptitious photos snapped of him by mangy, grim opportunists - these things are not culture of any kind, popular or otherwise, unless there is something else going at stake.

Wealthy Pour More Money Into Vineyards

cnbc.com — "I would say the Chinese are far and away number one for buyers right now," said Will Densberger of Pacific Union International, who specializes in vineyards in Napa Valley. "And after China, I say the biggest demand is Taiwan." A rich Chinese buyer recently Napa's Bialla Vineyards, a boutique Cabernet producer, for more than $3 million.

McDonald's to Add Three Quarter Pounders to Menu

cnbc.com — The swap for burgers with less meat comes as restaurant chains across the industry face rising beef prices. The higher costs are particularly problematic for fast-food chains, which are known for their cheap eats and limited in how much they can hike prices without scaring away customers. ( Read More: Secret's Out!

Shopify

cnbc.com — Headquarters: Ottawa, ON, Canada CEO: Tobias Lütke, Co-Founder and CEO of Shopify Year Founded: 2006 Number of Employees: 206 (260 projected full year 2013) Funding: Shopify has raised $22 million. Key Investors: Bessemer Venture Partners, Felicis Ventures, Georgian Partners, and FirstMark Capital What Shopify is an ecommerce platform that allows individuals and businesses to create online stores.