Washington Post Learns The Importance Of Fact Checking... And Reading The Comments | Techdirt
But, a bigger point is brought forth by Mathew Ingram who points out that people in the comments of the article pointed out the mistake really quickly and it took an entire week for the Washington Post to get around to making a correction.

Information at the end of a post in blog
The area after a blog post in a blog is very important. This is a area where a reader stops scrolling down, pause and think, “I have read the article, what do I do now ?” And this is precisely why this area is important. One may ‘help’ or...