In a highly watched initial public offering, shares of Salesforce.com debuted Wednesday with a big jump from their price set just a day earlier.

Although teens typically spend an hour online every day, only about 9 percent of teenagers say they get their information about current events from the Internet, according to a national survey to be released today.

Google revised the document it will give prospective investors yesterday, to state even more pointedly that the unusual auction process for its initial stock sale could cause its shares to fall after the offering.

With TiVo's fast-forward, viewers' shrinking attention spans and new media choices, the 30-second TV ad has more rivals for consumers' attention. That is pushing marketers' thinking increasingly outside the TV box for ways to make the costly but still dominant commercial work harder.

It's the new spam: software that sits on your computer and makes ads pop up as you browse the Web. Known as spyware or adware, it's reviled by consumers and under fire from crusading lawmakers, who say it is annoying, deceptive and a threat to privacy.

Apple Computer Inc. on Monday unveiled an adapter that lets users of its iPod digital music player connect them to stereo systems in some BMW and Mini Cooper models and use buttons on the steering wheel to play their music libraries.

When Google announced in April that it would test a free Web-based e-mail service that offered users vastly more storage space than its rivals, it introduced one twist - the ads that users see when they read their mail would be related to the subject mentioned in the message.

Having learned a thing or two about the guitar and songwriting, Geoff Byrd is practicing another instrument that could prove even more important to his musical career: the Internet.

Search firm Quigo Technologies is expected to launch a content-targeted text ad network today. AdSonar Exchange will focus on vertical content areas.

The No. 1 and No. 4 search engines are offering new tools to find Internet information more quickly, and to let Web site owners share revenue in the burgeoning paid-search market.