Odd. Well, you can get a link to your picture.

Click "save & send"

There's a line that says "If you'd rather not send this painting to your friends but would like a link anyway, click here"

Click "here". A little box comes up that says "Your painting has been saved. You can view it at:" (and it gives a link). Copy the link to be able to view the picture!

I just made one to show how it works, and it's here: http://artpad.art.com/?k4gyp91n38eg