"A handle" is an assumed name used in nonsecure communication which anybody else can hear or see.

I have never seen or heard it translated. Ham radio operators used "handle" to simply mean "name". In the days of CB (Citizen Band) radio in the seventies people changed its meaning to "an assumed name" to avoid using call letters or other means of positive identification. It is easily applicable to any communications.

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Note added at 2005-08-19 16:33:11 (GMT)
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To answer \"srubkova\'s\" concern: If the word \"roztrušovat\" can be used only with \"drby\" or some other unsavory subject, we still have to convey the idea of \"broadcasting\", rather than just \"using\".

An alternative to \"roztrušovat\" could be \"rozšiřovat\". Thus, \"nerozšiřuj mojí přezdívku\". If that\'s objectionable for the same reason as \"roztrušovat\", I\'d like somebody to tell me what other word would perform the function of \"broadcast\". \"Používat na veřejnosti\" won\'t do because the intent of \"using publicly\" is not the same as \"broadcast\". The intention of broadcasting is to reach as many recipients as possible, rather than just not exercising the right to communicate privately.