Facebook CEO Mark Zuckerberg speaks during a news conference at Facebook's headquarters in Palo Alto, California July 6, 2011. Facebook will integrate Skype videoconferencing into its social networking service, striking a deal to cement its role as a hub for communications. [Photo/Agencies]

A reveller jumps from a fountain at the Plaza de Navarreria during the start of the San Fermin Festival in Pamplona July 6, 2011. The annual festival, best known for its daily running of the bulls, kicked off on Wednesday with the traditional "Chupinazo" rocket launch and will run until July 14. [Photo/Agencies]