Mail.ru has twice more Opera users than Firefox

Some interesting browser statistics from ex-USSR region.
Mail.ru – the biggest web-mail portal:

Internet Explorer    82.41 %
 Opera                 8.50 %
 Firefox               4.50 %
 MyIE                  3.52 %
 Mozilla               0.59 %
 Netscape              0.30 %
 Safari                0.14 %
 Konqueror             0.03 %

How interesting! Opera there has almost twice more users than Firefox. And that all with smarter Opera cache! Amazing!