It's 2015, why are you not using >>>/hydrus/ ?
This is a free program that emulates a file booru on your computer. You can tag your images and synchronise tags with everyone else using the same tag repository as you. It also auto-downloads from certain pixiv users or tags from online boorus if you so wish.
http://hydrusnetwork.github.io/hydrus/
I've been using it a few days now but it is looking to be very useful. If you guys want to join the public repo in 4a285629721ca442541ef2c15ea17d1f7f7578b0c3f4f5f2a05f8f0ab297786f@hydrus.no-ip.org:45871 then we can tag a bunch of omorashi files together.
Sorry for shill.