Stories by Juan Carlos Perez

Click fraud, a practice that dilutes the efficacy of pay-per-click (PPC) advertising campaigns run in search engines like Google, stayed relatively low in the fourth quarter, according to a study.

Zimbra customers, on an emotional roller-coaster ride since it was acquired by Yahoo, welcome VMware's plans to buy the open-source e-mail, calendar and collaboration software vendor.

Google moved quickly on Tuesday to reassure its enterprise customers that their data is in safe hands, following its disclosure that it was targeted in December by a "highly sophisticated" cyberattack from China.

Google is opening up its Docs hosted office productivity suite so that users can store any type of file in it, giving the popular software-as-a-service product an important online storage component.

Google continues to broaden it business focus, now seeking permission to buy and resell electricity.

To enhance its suite of enterprise collaboration products, Jive has bought Filtrbox, whose software helps companies track social media content across the Web in real time.

A long time ago, in the mid-to-late 1990s, AltaVista was a major search engine, but with the rise of Google its popularity slid, eventually becoming irrelevant to most users.

Facebook's staggering usage growth continues unabated, as the company surpassed the 100 million U.S. unique visitor milestone in November, the first time the social networking site exceeds that monthly mark, according to comScore.

Aol officially set sail as an independent, publicly traded company on Thursday, leaving behind its parent company Time Warner and embarking on a journey that could be turbulent.

Yahoo will begin inserting Twitter posts directly into its general Web search results page on Thursday, expanding on an initial integration of Twitter into its search engine.

The Google Apps hosted communication and collaboration suite, which packs e-mail, calendar, office productivity applications and a wiki-based Web site builder, among other applications, is gaining a new component: discussion forums with mailing lists.

In an aggressive move, MySpace will open its users' public activity stream data to external developers, so that third-party applications and Web sites are able to display these status updates and action notifications.

Following through on plans announced a few months ago, Facebook is rolling out changes on Wednesday to its privacy settings intended to make them simpler to adjust and understand by its 350 million end users.

The Google Apps hosted communication and collaboration suite, which packs e-mail, calendar, office productivity applications and a wiki-based Web site builder, among other applications, is gaining a new component: discussion forums with mailing lists.

EtherPad, the real-time hosted word processor Google acquired on Friday, will live on as open-source software instead of being discontinued in the coming months.