"Donnie" never used his real name when he commented on blogs and websites. He had his reasons, but the main reason was fear. Sometimes saying the wrong thing could be legally actionable. If you you said the wrong thing to a wired and ready person, then the consequences could be dire.
Better to labor under the protective shroud of anonymity, thought Donnie (incorrectly).
One day the a sheriff's deputy showed up at "Donnie's" house and slapped him with a lawsuit.
"No such things as anonymous comments, 'Donnie.'"