Scheduled Summary Node?

Hello! I'd really like to come up with a module that would publish a "summary" node every week. This would be similar to what comes up every Sunday at http://www.gizmodo.com (as well as other sites), where the node is just a list of dated links to all nodes that were published during the previous week. Ideally, this would be an automated process. Has anybody done anything along these lines and/or could help point me in the right direction? Any guidance you can offer would be most welcome.

Thanks in advance!