If a Yahoo shareholder had bought the stock in January at about $19 a share, the price before Microsoft unveiled its original offer to buy the company, he'd still be doing better than the market in general.

By 2011, cost reductions will spur a switch to L.E.D. illumination for L.C.D. TVs. That will mean even thinner and more energy-efficient TVs.

Some bloggers call for a boycott of the Associated Press over its plan to help define how much of its content can be used on other Web sites. The anger misses more than 100 years of legal fights over whether paraphrasing the A.P.'s news articles constitutes unfair competition.

The latest edition of the Firefox browser is being released today with a call to set a world record for software downloads. Beyond the hype and a few new features, the new version is the beginning of an evolution in the standards behind Web pages that will enable much more sophisticated applications.

The nation's 6,000 f­ootball field-sized computer data centers have been recognized as remarkably wasteful power hogs, and the industry is mobilizing people and investment to address the problem – and cash in on that new market for energy efficiency.

A new version of Skype makes it easier to set up video-calls and organize records of past conversations.

Microsoft buys TV advertising specialist Navic Networks to boost its digital advertising offerings.

The world’s fastest computer, as measured by the ability to solve an array of linear equations, is a Los Alamos National Laboratory supercomputer, assembled from components originally designed for Sony PS3 video game machines. In the twice-annual rankings called the Top 500 list, published on Wednesday morning, the machine dubbed Roadrunner reached a long-sought-after computing milestone by processing more than 1.026 quadrillion calculations per second.

Why spam messages that insult a person's appearance are proliferating. (And , needless to say, don't open them. Just read this to find out what is in it.)

The chief executive of Digg, the big social news site, says he has sympathy for the claim by the Associated Press that blogs and other Web sites shouldn't quote from its articles. If users cut an paste too much on Digg, he said, they will be banned from the site.