Desktop search is one of those techs that keeps coming back and never really sticking.  At least that’s how it seems to me.  Look at how giddy I was about Beagle back in 2006.  And I tried it and it was, generally, pretty awesome.  It really worked well.  It was like the speed of locate without having to wait until the database was updated at midnight.  And it could see into IMs, MP3 metadata, emails and office documents.  Now?  According the the official website it’s no longer under active development.  Perhaps that’s because they met all their goals.  And that’s fine, but pretty much everyone switched over to tracker around 2008.  I’m not quite sure why - perhaps all the anti-Mono hatred that went on.  Fedora doesn’t even ship with Tomboy or F-Spot anymore.  They’re there in the repos, but they aren’t the defaults.