MSDN Article - Submitting Forms in InfoPath 2003
Microsoft Office InfoPath 2003 SP1 introduces data adapters for e-mail and Microsoft SharePoint Products and Technologies and a new submit mechanism whereby you can call a submit adapter through rules, which provide a non-programmatic method for submitting form data. This article describes the four submit data adapters, pointing out best practices for when to use them. The article also describes the three submit mechanisms for determining when a submit occurs.
Editors note: This has tremendous potential to save me a lot of work. I'll let you know how this works out. Right now I'm throwing forms into a SharePoint document library with the intention of writing an aggregate view in a different InfoPath form. We shall see...