Unsure
I checked out both threads prior to starting a new one. I notice that you are very active on the challenge site so you can probably answer my question. It appears that "challenge" is rather structured and not a line where you can just "jump in" with a new line of inquiry. The appearance is that you have to wait until one subject is exhausted before starting a new one. I have a few private photographs that I was looking for information on rather than simply "challenging" someones knowledge. Perhaps the name of my thread is mis-leading. I would be pleased to have a larger "audience" in helping me identify these pictures but I didn't want to monopolize the challenge site either. What do you think?