Hey, I just figured out something that will make posting a photo the second way easier!
1. Create or reply to a post
2. Add whatever text you wish to include
3. Click on the little square icon with the photograph of a mountain on it
4. This will open a small pop-up window
5. Type the http address in the pop-up window
6. Click on "OK"
7. Finish your text and hit "SUBMIT"
I sure hope this helps!