I had planned on buying one last year, but in reality, I don't have any use for a calendar for mine, and I was in it for December
I love the idea of it, but personally can't justify buying something I have zero use for. Maybe I'll order one for my parents for next year.
That being said, I love the voting and competition between the members for good shots, though I think it somewhat comes down to a popularity contest at the same time. I have some pics I could submit, but if it costs the site anything but a little time then IMO it's not worth it
I'm sure others disagree