Just as a reference note:
If you want to host the actual picture in your post,
you must get the properties of the picture first then add the img - /img on the ends of the properties. Just getting the link from the address box does not work from these websites.
If you dont know how to get the properties heres how.
-pull up your picture
-right click on the picture
-click on properties
*a grey box will open up with the property in the middle*
-copy the properties
-Then paste it inside your post with the proper img's on the ends.