carson1934. Taking drawbarz's point regarding the "preview post" button if when clicking on this button you do not see the photograph then it will not be there when you submit the post.
What you must be carefull of when posting the url in the image box is that there is not two "http://". When you first click on the post image icon a small window comes up and one is requested "Please enter the URL of your image:" and in the box you will note "http://" highlighted in blue. When one posts the URL it also includes an
http://. Ensure you delete the second http:// heading your URL leaving the first http:// in place. I find it much easier to ignore the image icon and just copy and paste the photograph URL direct into the message box. Then check the "post preview" and ensure the photograph has been posted.
Mel