1) Yes this is useful. 2) Why can't Google do this? They have my search/navigation history and my feeds. 3) I was kinda hoping this provided an aggregated RS

1) Yes this is useful. 2) Why can't Google do this? They have my search/navigation history and my feeds. 3) I was kinda hoping this provided an aggregated RSS feed of my Google reader. Why? Because I have other devices that accept RSS feeds but I don't want to export OPML and then have 2 separate feeds to keep in sync.