Recently Tom Vander Wall has posted a really thoughtful blog post that says what I have experienced. SharePoint is a perfect example.

And, moreover, our reflections and commentary on various games, simulations and learning events constitute feedback for those systems, modifying them internally as well, either directly, or through a series of design iterations, just as we see in (for example) agile programming. Additionally, however, gRSShopper has a built-in RSS aggregator.