Just use the facebook image URL (if you right click on the picture on facebook then click copy image url/location) then come back here, open a reply and hit the little picture icon above in the message options, that will open a pop-up box, paste the url in and hit ok, and it's added! You can do the same with the photo album on facebook if you have an album with multiple pictures, just open the album, then copy the url in the url bracket, come here click the little link option above (sideways 8 with a green +) paste in your url and we can see the entire album if you have it open to the public