How to Organize Photo Collection with FOSS

[Nicholas Leippe]

I don't know if there are any tools to do this yet (google's picasa, or 
photomesa, perhaps? some image gallery framework?), but the way I would want 
to do it would be to tag the images and create a folksonomy database for 
them.  Then you could search/collect them any way you want--by person, event, 
date, place, subject, etc.

I just looked at the most recent photomesa--it looks like it can do just that 
now.