That actually truly was intended to not be a light source. It's supposed to be behind the girl; can't you see the lit up part on the top of her head? It was c&p'd from a picture of the Earth and her face is where the dark side was.
I do know this - xenforo dropped the ball by not keeping the vbulletin reputation comments as a feature. The loss of the Reputation comments data when we switched to Xenforo really was the death knell for the site when it came to all the users that left. I know I missed it so much and I got way less interested in the site when that feature was gone and I run the site.