If you were to measure the success of a product, it would be how many people use it rather than how many people bought or downloaded it, and Opera Software’s recently hit milestone of 100 million monthly users shows a lot. While Opera’s dominance doesn’t show on the desktop, their presence on the less crowded mobile device market has allowed them to dominate it. Now Opera Mini has become the most used web browser on the mobile phone. With 2 billion page views served daily, double the amount recorded in July last year, their strong growth is only a sign of better things to come. How many of you use Opera Mini as the default browser on your phone?