Mobile browser company Opera has published a review of the mobile web for 2008. Its State of the Mobile Web report shows continuing growth, with 17.8 million people using Opera Mini at the end of the year. In the UK, the top 5 sites visited by Opera mobile users were google.com, facebook.com, yahoo.com, bbc.co.uk and orkut.com. The top UK social network was facebook.com with 536% growth in 2008. MySpace, incidentally, showed a 15% drop. [Press release]