The White House wants Newsweek to do more to repair the damage from their possibly false Quran report. But this is the age of the Web. Stories that prove a point, anyone's point, never die. The story will be quoted from source to source forever.
Way back in 1981 or so, if people were convinced that someone was writing emails and posting news stories that were unfounded and malicious, there were Internet Gurus who could cause that person's writing to be removed from every Internet server within a few minutes. They used this power rarely, and when they did, people complained (quite reasonably) that perhaps such a power should NEVER be used. But those days are over. Will there ever again be a way to expunge clearly false information from the web?