In October 2010, Facebook was in the centre of the scandal, when journalists from The Wall Street Journal learned that many of the applications within Facebook, such as game FarmVille, Mafia Wars, Texas HoldEm Poker, take confidential data from your profile and send them to third parties.
I think with other соцсетями the same situation, they are in a different degree copy Facebook and a huge number of applications want to obtain personal data and friends lists.
Of course and I have a few applications, but only the most necessary and when I find a more convenient way to listen to the radio and to send postcards I have them remove.
Defiantly delete the Music player in Vkontakte!
P.S. If you are brave and love to play games popular social network Vkontakte, I recommend you to visit site VKTopGames.ru that will help in choosing the right game 😉