Thanks, what was I doing wrong?
Go to the imgur site, right click on the image and select "Copy image address" (that is the command in Chrome, should be something similar in other browsers), and paste it between the [img][/img] tags.
I think the '?1' on the end of the link you used confuses the software that runs this site. The link should end in '.jpg' or 'jpeg'.
Here's a working link to Imgur.
![[Linked Image]](https://i.imgur.com/piIklem.jpeg)