funny you mention flask - i was going to add that as one of the projects that seem interesting. It wasnt very clear that this would an appropriate project to start of with, as the code review etc doesnt look very formalized?
interesting how similar these designs are - are these some off-the-shelf parts everybody but me knows about (leaving aside premium wordpress themes)?
why do my webapps looks so sucky ?
EDIT: it seems they mean the book "Prototype and script.aculo.us" - another one of their pragmatic guides.. I think.