Facebook Retreats on Online Tracking

Within the last 10 days, more than 50,000 Facebook members have signed a petition objecting to the new program, which sends messages to users’ friends about what they are buying on Web sites like Travelocity.com and Fandango. The members want to be able to opt out of the program completely with one click, but Facebook won’t let them.

Facebook executives say the people who are complaining are a marginal minority. With time, Facebook says, users will accept Beacon, which Facebook views as an extension of the type of book and movie recommendations that members routinely volunteer on their profile pages. The Beacon notices are “based on getting into the conversations that are already happening between people,” Mr. Zuckerberg said when he introduced Beacon in New York on Nov. 6.

The complaints may seem paradoxical, given that the so-called Facebook generation is known for its willingness to divulge personal details on the Internet. But even some high school and college-age users of the site, who freely write about their love lives and drunken escapades, are protesting.

Facebook users each get a home page where they can volunteer information like their age, hometown, college and religion. People can post photos and write messages on their pages and on their friends’ pages.