I'm currently still organising my pics by name. Luckily I only save 5-10 pics per set, so that saves me a lot of space on my HD.
Once I've done that I want to make a simply database, but in 2-3 years time I still haven't gotten to it.
Anyway, since most sets are about 10x as large as the amount of pics I actually keep, and since they take up 16 GB right now, I'd say that if I kept full sets I'd probably have 160 GB of porn pics on my PC.
I order my folderss by name and the names are the aliases of the adult performers in alphabetical order. Example : JanaC., JanaFoxy, JanaJordan, JanaRocks <-- is the name of 1 folder. Within that folder are once again multiple folders. Each folder contains the pics of 1 set.
I currently have 318 model folders, one of which is called MET-ART, which contains 1173 folders. I haven't put all those folders in main model folders yet, so it looks a bit like the following example: XeniyaA.1; XeniyaA.2; YanaI.1; YanaP.1; YanaP.2 etc. Only models who haven't posed for any other company besides MET (or if I'm not aware they have, or if they look butt ugly in all other shoots besides the MET shoots) are still in this folder.
Once I'm done with the MET-ART folder, it'll look like this: XeniyaA; YanaI; YanaP; etc. (of course every folder will then have it's own subfolders)
I hope, but I honestly have to say I doubt that this message made any sense.