Andy Wong/AP Apple was criticized in a Senate committee hearing Tuesday for using complex accounting to minimize the corporate taxes it pays. One key piece of the company's tax strategy: It funnels lots of its profits through subsidiaries in Ireland.

Yahoo's $1.1 billion purchase of Tumblr could be considered a bargain compared with its other big-dollar bets. The company's history is dotted with pricey purchases of once-hot Web properties that had more promise than eventual purpose. A look back:

GeoCities, 1999: $3.7 Billion

Giant technology firm Apple is paying billions of dollars less than it should in U.S. taxes each year, according to a report by the Senate Permanent Subcommittee on Investigations. In a hearing Tuesday in Washington, D.C., Apple CEO Tim Cook will defend the company.

Its Model S sedan (base priced at $62,400, after federal tax credits) was just named Motor Trend Car of the Year. Reviewers at Consumer Reports gave the lithium-ion battery powered vehicle a rave.

And the company, headed by billionaire innovator Elon Musk, 41, posted a profit for the first time in its 10-year history — powered in part by zero-emission environmental credits.