I ran again into the same situation as Red Starred today. And the A-Team is correct.
When I write to a cache owner, it's beacuse I think the cache is missing or I am having diffculty finding it.
So I want to send a picture of where I think the cash would be, or I include details of my steps (for a multi) and request additional hints. Therefore, posting the picture on a note would not be appropriate. And posting the picture on flickr is just one more additionnal step I would like to avoid.
The initiating suggestion is a great idea and I fully support it.