The tags have even stayed with the images through my three upgrades to newer versions, though of course I've added more as time went on. I started with a few broad categories and have added more categories and sub-categories. Now even on early onset senility days I can pretty much find whatever I'm looking for fast, even if I don't have a specific image in mind.
I've been playing mostly with the camerabag2 program (when not sewing or walking for hip health or SLEEPING (why does it seem like I sleep more doing night shift when I know I sleep less? More PURSUIT of sleep, I think). Even when all sucked up into the new fun of camerabag I still find myself going to the organizer in Elements. I always wait for sales, but I swear this program is worth every penny I've paid for it. If you've got it, learn to squeeze out all of the benefits, and the photo tags are a big benefit!
The tutorial is here http://youtu.be/cdB0TyzF8fA . Sure is weird hearing myself, working on sounding better, but my mind stutters!!!