I get an error on the link, but that's a flickr issue, it says photo not found (maybe it's not set public?).
Remember MBN likes pic links in BBCode. Flickr has that as an option, so for another pic in your album, this should work:
When you have just one photo displayed (rather than an album) the share button is the bent arrow in the bottom right.
That's using the small 240x160 thumbnail option, which automatically makes clickable links. I usually strip off all the stuff after the first slash-url, after I paste the link in MBN, which is all the flickr captions and link text stuff.
(This is posting a link instead of uploading to MBN)