"thousands of photos have been uploaded and judged by users since."
Who are the users that are judging? What is the breakdown of those users (age,sex,location,education etc.)? What can possibly be inferred from this without knowing that info?
Who are the users that are judging? What is the breakdown of those users (age,sex,location,education etc.)? What can possibly be inferred from this without knowing that info?
The entire premise of the site is for the user to be judged by strangers. Why would age/sex/location/education of the person doing the judging matter?
It can bias the results. How did your users find your site?
Unless you're very careful with adjusting for factors (like age, location, etc) and careful with statistics you end up with garbage.
Either do something that's just purely fun, or do something properly and call it research. But don't do something wrong and call it research, because there are so many people ignorant about how science works and ignorant about numbers.
Not trying to be overly critical - I like the concept and execution, but these things are really important in statistics.