I don't publish it but i can see it in browser.
I have try in this site with the plugin. I have upload a image and i don't have pubblished it, but if i put this link in navegator
hxxp://www.joomlapolis.com/images/comprofiler/plug_profilegallery/46066/pg_355751336.jpg
i see the image. If is correct, google can see it, i could disallow it in robot.