Who is the biggest star on YouTube? Felix Arvid Ulf Kjellberg, that's who. Better known as PewDiePie, the Swede's gaming channel attracted 351 million views in June 2014 alone.

That amounts to in excess of 8,100 views a minute on average, driven by the UK-based gamer's massive fan base on YouTube.

At the end of  June, PewDiePie had a whopping 28.2 million subscribers, which has since increased to nearly 29.1 million.

Between July 2013 and the end of June this year, his videos were watched more than 3 billion times on YouTube.