Brits love their Facebook.
According to Internet metrics firm, Hitwise Intelligence, in the month of December Facebook accounted for one in every fifty UK Internet visits, peaking on Christmas day. Furthermore, Facebook’s market share in the UK has increased ten-fold over the past twelve months.
The Hitwise data also shows an increase in the number of UK visits to social networking sites in general, and reflecting this, an increase in the amount of traffic those sites are sending to others (outbound links). Perhaps Facebook et al. aren't such silos after all.