This is a little app to hold values that could be loaded when needed from Flash banner ads. I worked with one other developer, but wrote most of the code, using Python and JQuery, with Google App Engine for the backend.
The idea is to enter start and end dates for your campaigns, so that your banners can know what information to display, reducing the need for re-building every time you need to update a promotional period or something. Also included were the custom fields, where you could update any kind of information on the fly. I also built AS2 and AS3 Flash APIs that could be used to load the information. The video here is of the interface where you could enter all the values.