Also tried Flickr this morning, inserted between the image tags and no picture showed up
This is how I use Flickr.
1. Click on your photo so that it opens it up on its own page (sorta)
2. There is an arrow in bottom right corner. Click it.
3. Click on BBC Code. Select Medium 640x480.
4. Press control C to copy the link.
5. Press control V to paste the link in your message.
6. I usually delete everything to the left of the bracket img and to the right of the ending img bracket
7. Picture should show up and be a decent size but not huge like those some are experiencing.