OK
Social networking service · ok.ru
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Odnoklassniki, abbreviated as OK or OK.ru, is a social network service used mainly in Russia and former Soviet Republics. The site was launched on March 4, 2006 by Albert Popkov and is currently owned by VK.
The website currently has more than 200... Wikipedia
Created by: Albert Popkov (founder and head)
Launched: March 4, 2006; 18 years ago
Owner: VK
Registration: Required; no payment needed since August 31, 2010