Create a log of what people are doing
When people submit contents, the contents will obviously just 'show up'.
However, as we get more and more contents, it will become difficult to find new contents without having to wade through the whole site first.
Any change or addition of contents should be logged briefly and when somebody signs in, they should get a listing of 'what changed since your last visit'. This 'what changed' link should have a link to the content editor's profile as well as a link to the actual contents.