This question asked a rather vague question with just a link to jsfiddle - but crucially the link was placed inside parenthesis
Sample code here (http://jsfiddle.net/CPtp4/4/)
I tried to edit this question to remove the parenthesis making the link clickable, but when I went to save I got the message about "making the question relevant by including the relevant code - not just linking to jsfiddle"
So it seems a user can bypass this warning by just wrapping the link in parentheses.