When filing for an IPO Mail.ru Group disclosed some interesting financial indicators for the different platforms they own. At the moment Mail.ru Group itself is mostly owned by Digital Sky Technologies, a Russian investment fund. Mail.ru Group's fixed assests include 10% of Mail.ru portal, 100% of a social network Odnoklassniki, 91% of recruitment portal Headhunter.ru, 100% of ICQ LLC, 24,99% of Russia's biggest social network Vkontakte.ru, 25,09% of QIWI Investments, 2,38% of Facebook, 1,47% of online-game developer Zynga Inc. and 5,13% of Groupon. On top of that Mail.ru owns minority shares in a plethora of Russian and Ukrainian Internet companies.

This is the table with Mail.ru Group's number for first quarter of 2009 and 201o:

As you can see, Mail.ru Group's net profit doubled on all platforms except for Odnoklassniki, a social network. Another social network  -Vkontakte.ru, which claims more active members than Odnoklassniki or Facebook in Russia and CIS, showed the highest revenue between 2009-2010. The growth might be explained by the increasing popularity of online games like 'Happy Farmer', which was a huge hit on Vkontakte. Since we're about to step into 2011 and Mail.ru Group has filed for an IPO, the number above might by now be considerably higher.