Just another way of browsing your files
The Zeitgeist guys created a fuse file system called zeitgeistfs. It is basically a calendar containing the files accessed at that specific date. So at the Akonadi meeting last weekend, having two hours to kill, I thought that should be doable with KIO. So two hours later (most of that time was spent twiddling with UDS entries) the timeline:/ KIO slave was up and running:
The code that actually does something is minimal: a bit of UDS entry creation for dates and a simple SPARQL query to forward to the nepomuksearch KIO slave.