Lacking Categories

I was sure that having Blogger publish to my own server via FTP was going to be painful and annoying, so I tackled that risk first. It turned out to be easy and smooth (as was lunarpages' sub-domain support), so the parts I thought would suck were all done. Now I'm noticing that I don't have post categories (nor tags). Can I live without them? Sure, but will anyone who cares about my photos from the family Thanksgiving gathering ALSO care about my struggles with some J2EE-ass techno-crap? Probably not. What to do?