Saturday, August 18, 2007

Lifting Corporate Fingerprints From the Editing of Wikipedia

By KATIE HAFNER

Last year a Wikipedia visitor edited the entry for the SeaWorld theme parks to change all mentions of “orcas” to “killer whales,” insisting that this was a more accurate name for the species.

There was another, unexplained edit: a paragraph about criticism of SeaWorld’s “lack of respect toward its orcas” disappeared. Both changes, it turns out, originated at a computer at Anheuser-Busch, SeaWorld’s owner.

Dozens of similar examples of insider editing came to light last week through WikiScanner, a new Web site that traces the source of millions of changes to Wikipedia, the popular online encyclopedia that anyone can edit.

The site, wikiscanner.virgil.gr, created by a computer science graduate student, cross-references an edited entry on Wikipedia with the owner of the computer network where the change originated, using the Internet protocol address of the editor’s network. The address information was already available on Wikipedia, but the new site makes it much easier to connect those numbers with the names of network owners.

Since Wired News first wrote about WikiScanner last week, Internet users have spotted plenty of interesting changes to Wikipedia by people at nonprofit groups and government entities like the Central Intelligence Agency. Many of the most obviously self-interested edits have come from corporate networks.

Last year, someone at PepsiCo deleted several paragraphs of the Pepsi entry that focused on its detrimental health effects. In 2005, someone using a computer at Diebold deleted paragraphs that criticized the company’s electronic voting machines. That same year, someone inside Wal-Mart Stores changed an entry about employee compensation.

Jimmy Wales, founder of the Wikimedia Foundation, which runs Wikipedia, says the site discourages such “conflict of interest” editing. “We don’t make it an absolute rule,” he said, “but it’s definitely a guideline.”

Internet experts, for the most part, have welcomed WikiScanner. “I’m very glad that this has been exposed,” said Susan P. Crawford, a visiting professor at the University of Michigan Law School. “Wikipedia is a reliable first stop for getting information about a huge variety of things, and it shouldn’t be manipulated as a public relations arm of major companies.”

Most of the corporate revisions did not stay posted for long. Many Wikipedia entries are in a constant state of flux as they are edited and re-edited, and the site’s many regular volunteers and administrators tend to keep an eye out for bias.

In general, changes to a Wikipedia page cannot be traced to an individual, only to the owner of a particular network. In 2004, someone using a computer at ExxonMobil made substantial changes to a description of the 1989 Exxon Valdez oil spill in Alaska, playing down its impact on the area’s wildlife and casting a positive light on compensation payments the company had made to victims of the spill.

Gantt Walton, a spokesman for the company, said that although the revisions appeared to have come from an ExxonMobil computer, the company has more than 80,000 employees around the world, making it “more than a difficult task” to figure out who made the changes.

Mr. Walton said ExxonMobil employees “are not authorized to update Wikipedia with company computers without company endorsement.” The company’s preferred approach, he said, would be to use Wikipedia’s “talk” pages, a forum for discussing Wikipedia entries.

Mr. Wales also said the “talk” pages are where Wikipedia encourages editors with a conflict of interest to suggest revisions.......

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