Facebook Seeps Onto Other Web Sites

With about half of Facebook’s 400 million users checking in daily, the social networking company has established itself as one of the Web’s most popular destinations

Now Facebook is intensifying its efforts to expand its empire beyond its Web site; the company wants to turn scores of sites across the Internet into satellites where users will be able to interact with their Facebook friends.

Details of Facebook’s plans — which involve a variation on its “Share” button, already prevalent on many sites — are expected to be introduced by Mark Zuckerberg, the company’s chief executive, on Wednesday during its conference here for third-party developers. But even before Facebook makes its plans public, its aim to become a social networking force across the Web is facing competition. More