Following the announcement that AOL is to sell or shut down Bebo , now is as good a time as any to highlight how well the social network is performing in the UK. The table below lists the 10 most visited social networking sites in the UK last week, with Facebook picking up over half of the traffic. Bebo still ranks fourth in the category (and 31st in All Categories), but Facebook receives 33-times more visits. Of course it hasn't always been this way,