This is what it looks like when one inserts the BBCode generated by Flickr. This has worked in the past:

http://www.flickr.com/photos/79087095@N03/8569167817/http://www.flickr.com/photos/79087095@N03/8569167817/ by The Outrage, on Flickr

 

Looks like its being interpreted as youtube

 

Perhaps this is due to the link's URL not ending in a file name, e.g. "filename.jpg".

 

http://www.flickr.com/photos/79087095@N03/8569167817/

 

I can try to get the BBCode, encapsulated in "code" tags, later this evening. I'm assuming "code" is turned on.

 

Here is the Flickr generated code:

Interestingly, it works in "code" tags.