>>6
people are constantly developing programs or filesystems that support this
Oh, but mine is regex-based, has dynamic keywords, and works with my other tools :)
Who's going to enter the metadata for several thousand images?
You're right; I desisted from classifying my real photos, but I might keep my hentai classified. In fact it already is; I have a directory tree for it, plus a parallel root of hard links with my favorite pics and extra categories. I have to classify it somehow or else I can't jerk off to what I want, and this is a serious problem! :)
So with my tools, I could go to any directory and do something like prisma-set * c=hentai-Maburaho , then only bother for particular files with stuff I want to retrieve later, like prisma-set <serial_number_of_great_pic>.jpg favorite=yes .
image-based query systems like imgSeek
I'll have a look at it, but I have my doubts; you know I'd be drawing boobs all the time and it'd return tens of thousands of results... :P