PHILADELPHIA (CBS) – The international staffing firm Robert Half is out with a free downloadable guide to electronic business etiquette.

Nearly two-thirds of HR managers interviewed by Robert Half said that an e-blunder could “somewhat” effect your career path. The guide lists five types of unproductivity: the venter (always negative), the noise polluter (no mute button), the cryptic communicator (abbreviations need code-breaking), the pop-up artist (constantly barraging you with IM’s), and the conference call con (busy with the smart phone, ignoring the topic).

Jack Schultz of Robert Half list one more blunder:

“The friend counter. I think almost everybody has seen this person where it’s almost a race to see how many contacts they can have or how many friends and sometimes with really no (substance) to those relationships.”

CLICK HERE to see the guide.

Reported by John Ostapkovich, KYW Newsradio

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