Looking at your link in the source code, it gives me a 404 no matter what I try to do with it. Try copying the link again. The easiest way to post a pic from Imgur is to use bbcode.
Here is a typical direct link (the 'm' gives a medium thumbnail, but I usually use a "h" thumbnail:
http://i.imgur.com/PS36Z4Dm.jpg
The bbcode is the same but enclosed by open and close "img" tags.
It looks like this: