Thanks Mel, been hard at work trying to improve the accuracy of the site (people's main criticism - you never get any praise!).
Recently added a new slideshow feature for any page of posters that you are browsing (only when registered/logged in, as high res images are restricted to people that have registered).
Added a forum as well, so that people can contribute research, or suggest new features.
Still looking for people out there to contribute photos of rare posters. Information about artists is also much appreciated.