Hi Nick,
currently not directly,
But if you click "options>get link" on facebook it brings up a window with the image location (url). highlight the link and copy it.
Then above the box youre typing your message in to theres this image

click it, these BB codes apear "[img*][/img]" (no star in the top right though, i have to put that for the code to show in the post) copy the link inbetween the 2 codes and thats it. its a lot simpler than it sound when i describe it, and a lot easier than having to add them to an image hosting site all the time.

If you use mozilla firefox for a browser (my preferred system for general internet surfing) you can in theory do this with any image on the net, simply right click the image, select "copy link location" and copy it between the BB codes

Hope this helps, Brian
