Internet traffic to legal pornographysites in the UK comprised 8.5% of all “clicks” on web pages in June 2013 – exceeding those for shopping, news, business, or social networks, according to new data compiled by SimilarWeb, a web measurement company based in Tel Aviv which tracks clicks online rather than total volume of traffic. The US is not far behind with 8.3% of all clicks going to porn. Only “arts and entertainment” – a category that is boosted by Google's video site YouTube – and search engines were bigger, at 9.5% and 15.7% respectively.