IAC plans to split into five publicly traded companies, breaking apart Barry Diller's multimedia empire. The move could place control of several IAC businesses in the hands of John Malone's Liberty Media.

  Google unveiled an alliance with 33 companies, including Motorola, Samsung, Sprint and T-Mobile, to develop low-cost mobile phones based on "open" technology standards. (Google's partners)

  Sun Microsystems posted a small quarterly profit, despite higher restructuring costs. Revenue edged up 1% to $3.22 billion.

  The Nasdaq dropped Monday, as financial-market jitters continued to roil the broader market. RIM and Yahoo shares advanced, while Comverse fell after delaying its financial restatements.

  Dell agreed to pay $1.4 billion to acquire EqualLogic, a closely held provider of storage-network and virtualization software.

  Facebook and MySpace are rolling out more services for advertisers, hoping to turn their popularity into more revenue.

  BEA Systems said it will allow investor Carl Icahn to view non-public information to show that the rejected Oracle buyout undervalued the software firm.

  Phoenix Technologies is launching an ambitious campaign to improve laptop functions, including the ability to fire up software in seconds.

  Marvell is unveiling a chip that it says can sharply reduce the size and energy consumption of power supplies, which convert alternating current to direct current used by most consumer-electronics products.

  Alibaba.com plans to expand into Taiwan, Hong Kong, India and Japan, its CEO said.