The original source there isn't Gizmodo; it's McAfee's own posts on the Bluelight drug forum. He has admitted these are his posts, though he now says it was a hoax: http://www.whoismcafee.com/stuffmonger-and-bluelight/
The story is that he made the posts -- the first news source for that seems to be Gizmodo. (And they provide enough supporting evidence to make it clear it's not pure speculation.)
