"Google remained comfortably ahead of the pack, with 33.9 million UK visitors in May," The Register writes. "Meanwhile, worldwide usage of Facebook has reportedly shot up -- even as around 6 million Americans recently unplugged themselves from the dominant social network. Facebook has yet to officially confirm that it now has 750 million users globally.
Earlier this month, data suggested that that around 100,000 UK Facebook users had actually quit the service. That finding, put out by Inside Facebook's premium Gold service, prompted Facebook to challenge about the growth slump report. As The Register notes, however, Facebook has yet to offer up any contrary stats of its own.