Poland Instant Communicator (Messenger) No. 1 is Gadu-Gadu (Polska) (Niemiecki) Wikipedia
In April 2006 Gadu-Gadu had more than 5.3 million unique use and a reach of 43 % within Polands Internet User Population. Gadu-Gadu it is well financed with user accepted advertising, sold by the ad.net SA.
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