This is pretty cool. I've been watching Beagle for a while now, it's the desktop search solution to Spotlight (Mac) and WinFS (Windows). Check the screenshots, it looks and works pretty sweetly. There were also some flash demos posted recently. Anyway, someone put up a HOWTO Beagle 0.0.5 Installation. Note though that to get the latest mono in portage you will need to unmask gcc as well (not a big deal).