On Tuesday, December 26, an earthquake near Taiwan caused widespread disruption to telephone and Internet networks. Since then there have been reports of drops in the amount of spam received.
It makes sense. Conventional wisdom says that lots of spammers are in the Pacific Rim area, so cut off their communications and you cut off the spam.
But it’s not the only explanation. Notice that the spam respite begins at Christmas. If spammers work less on weekends, who’s to say they don’t take vacations when the rest of us do?