Although I don't have solid proof, a textual analysis of the Weekly World News makes it pretty clear that they know most of their readers are bored college kids and geeks. In addition to the Web page, they sell T-shirts with their most outrageous headlines and provide updates on their best stories. However, most of their ads are of the typical tabloid variety. Regular contributors include a political columnist named Ed Anger, psychic Serena Sabak (who took over from the original psychic, The Countess), and advice columnist Dotti Primrose.
The WWN has occasional moments of brilliance, such as when they closed a series of Elvis pictures by revealing that he had died of diabetes--years after he had gone into hiding. Fans of politics are also waiting to see who the space alien endorses for President this year (update: I was disappointed to see that it was George W. Bush).