OK, trying to come back in action now. While I am going through pending posts (which is about 200000 posts) I came throw J-Walk Blog's post which links to Ratemynetworkdiagram.com . Yes I like the concept. People can see the diagrams and learn a lot from them. What I would recommend is people should explain their diagram too, so it becomes simple for viewers to understand why the network was designed in a particular way.
Tejas Patel