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1.
To not be able to be reached by standard means of communication (i.e. phone / email / txt) for a several hour period.
Bro, what happened to you last weekend, I couldn't track you down. Don't go dark on me again.
автор: sftron 9 января 2008
 
2.
To be outside communication range, especially after hours.
When the response team in Europe go dark, your call will be automatically rerouted to Australasia.
автор: yabbadabba 24 февраля 2008