I wish to post a picture then underneath have various threads wherein people can say what they believe the pic is of or what is taking place in said pic.
Amore did this same thing. She added a picture just like you did here and asked the question: Give this picture a caption. Thats all it takes. Go to amore's home page and check out her questions she's asked over the last month or so. You will find that one. Click on it and you will see what I am referring to.
Just use the tool bar at the bottom of the text box when you're posting the thread. Choose the icon of the camera located next to "upload a picture"on the bottom right of the textbox.