Actually, its pretty customary to link to whatever you are posting about. Or at least MENTION the article you are referring to. People aren't mind readers.
If you want people to discuss a visual, they shouldn't be expected to go searching for it.
I love that you called out snark when that was the entire point of your post.
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.