I have written about this in DNN Newsland, but blogs mostly get more attention.
This wiki has almost 4000 pictures. I am sure that 20% of consists of doubles. Furthermore, a lot of new users add pictures to the articles that are not from the Jurassic Park Franchise. Particularly the latter looks very sloppy.
I ask everyone to remove non-JP pictures from this wiki (unless they are needed). To prevent doubles we must organise the pictures so they are easier to find if you need them. Before you add a picture, make sure it isn't uploaded yet. If you add a picture, place it into a category. If the picture is from one of the movies, add the picture to the media page of the film.