There was a mistake in posting by one of the members who runs a similar group on a different blog. She intended to propose Crescent to her other blog group. The current prompt for Ideas of Inspiration is March. We did have Crescent as a prompt in March 2011 when we were doing Shapes.
I am looking forward to seeing more of your March photos.
I don't mind if you want to post to previous prompts though. I think Celia's crescent photos were very good examples of thinking outside the box.