@bernardhaasbroek I believe GD has a showcase on its website, and from time to time I come accross websites which have clearly a GD basis. But I agree,a Hall of Fame would be nice. It gives a more clear impression of what can be built with GD and that helps others to build theirs.
What I personally would like to see added to this forum is a 'how to' section. I have had lots of help from GD support with snippets and such, and others must also have a boatload of snippets. As snippets and manuals on how to do something are extremely nice to have you can combine a showcase with a short explanation with how you buit it.
A site I am working on now (lonelyheartsads.co.uk) is still under construction but rather nice, and it works well. What is your website?