And more than 50 percent said that they had received offensive e-mail messages on the job.

Even one offensive e-mail message circulated around the office by a single employee can pose a liability risk for a company.

The receiver of the call could give evidence that the grossly offensive message was received on a public telephone.

But the world is getting to be a much more hostile place for spammers, particularly those who send some of the most offensive messages.

The apartment he shared with his mom was also covered in offensive messages.

Vault says it does monitor its boards but may not catch every offensive message.

Last year the company dismissed 23 employees - most based at a regional business office - for sending offensive e-mail messages.

Plates are not allowed to display any political, religious or offensive message.

"I cannot deliver a message so ridiculous and offensive, Earthman."

Being a good sonidero also involves knowing how to take the edge off an offensive message, such as those passed between rival gangs.