Jesse Curtis Morton, who founded the now-defunct Revolution Muslim website, was sentenced Friday in Alexandria. Earlier this year he admitted using the site as an outlet for al-Qaida propaganda. He also conspired with another man to deliver a thinly veiled threat to the creators of the "South Park" television show for perceived insults to the prophet Muhammad.
Defense attorneys had sought a prison term of less than five years.
The other defendant in the case, Zachary Chesser, received a 25-year sentence, but he also tried to travel to Somalia to join the al-Shabab terrorist group.