What is it about e-mail...

...that turns people into Teh Stoopit:

A 49-year-old New Orleans man pleaded guilty in U.S. District Court on Friday to charges of sending threatening e-mail messages late last year to a federal judge and Justice Department lawyers in Illinois. Michael F. Henry, who could get up to six years in prison when Judge Sarah Vance sentences him in June, has been involved in litigation with the Internal Revenue Service over its effort to make him pay $6 million in delinquent personal income taxes, money he says he doesn't owe.

I can't imagine this guy is dumb enough to make these threats over the phone, or to an AUSA's face, yet he'll e-mail them?