A woman who stumbled on evidence of child abuse while looking for information about babies on the Internet helped Spanish police break a child pornography ring.

Police made 13 arrests in different parts of Spain after detecting thousands of images of child pornography following the woman’s tip-off, the interior ministry said on Tuesday.

The woman called police after she found files with names suggesting pedophilia on an Internet file-sharing site. Investigators discovered the files contained images of two adults sexually abusing a child.

The Nasdaq Stock Market, an exchange that typically attracts a high number of technology listings, said on Tuesday that it had launched an index to track the performance of a broad range of companies offering Internet-related services.

The Nasdaq Internet Index is designed to track the performance of companies offering such services as Internet access, Web-based searches, Web hosting, Web site design and Internet-based retail, according to a company statement.

The index is made up of Internet companies that trade on Nasdaq and other U.S. exchanges, Senior Vice President Steven Bloom said.

Software maker Adobe Systems Inc and Internet company Yahoo Inc said on Wednesday they will offer a service to let publishers run advertisements in Adobe’s popular document-reading format.

The new service, Ads for Adobe PDF Powered by Yahoo, presents publishers with an alternative to conventional subscriptions, which, if widely adopted, could open up a new model based on free, ad-supported publishing, analysts said.

Increasingly worried over Internet providers’ behavior, a nonprofit has released software that helps determine whether online glitches are innocent hiccups or evidence of deliberate traffic tampering.

The San Francisco-based digital rights group Electronic Frontier Foundation hopes the program, released Wednesday, will help uncover “data discrimination” - efforts by Internet providers to disrupt some uses of their services - in addition to the cases reported separately by EFF, The Associated Press and other sources.

“People have all sorts of problems, and they don’t know whether to attribute that to some sort of misconfiguration, or deliberate behavior by the ISP,” said Seth Schoen, a staff technologist with EFF.

The new software compares lists of data packets sent and received by two different computers and looks for discrepancies between what one sent and the other actually received. Previously, the process had to be done manually.

Google announced the release of version 2.0 of Google Maps for mobile, its innovative and widely used mobile mapping and local search application. New in v2.0 is a beta version of Google’s “My Location” technology, which uses cell tower ID information to provide users with their approximate location, helping them determine where they are, what’s around them, and how to get there.

Google is committed to providing users with quick and easy access to the information they need, no matter when or where they need it. Location information makes mobile mapping and search faster and more convenient, but the most common source of location information to date — GPS technology — is supported on fewer than 15 percent of the mobile phones expected to be sold in 2007. With Google’s new My Location technology, users who don’t have GPS-enabled mobile phones will now be able to take advantage of the added speed and convenience afforded by location information. The My Location technology also complements GPS-enabled devices, as it delivers a location estimate faster than GPS, provides coverage inside buildings (where GPS signals can be unreliable), and doesn’t drain phone batteries as quickly as GPS. Whether users are trying to locate a restaurant in an unfamiliar neighborhood, get directions to the nearest hotel while traveling, or just find a place to grab some coffee while shopping for the holidays, Google Maps for mobile with My Location can help them get what they need quickly and easily.