Although the quest has ended, here it goes: how about having several different headlines.rdf files. For example, have the standard one with the last X (10, 12, whatever) newest nodes. Also have one with the new nodes for the last day, the last 2 days, last week, etc. If the names are nicely standardized, it would make it easy to write automatic headline grabbing tools for different periods of time (or number of nodes).