Russia coach Fabio Capello has banned his players from using Twitter during the World Cup.
The Italian, whose team face South Korea in their opening Group H match on Tuesday, insisted he was not cutting off contact with fans and media.
The 67-year-old former England boss said: "Tweets sometimes can be a nuisance if they are not written in an intelligent fashion.
"To prevent such a nuisance, I'd rather ask my players to abstain for a month."
Capello, who failed to guide England past the second round at the 2010 World Cup, celebrates his 68th birthday on Wednesday.
He added: "I never expect presents from anyone or anywhere."