Update Tags?

I realize the chances of any work being done on the site are slim, but any chance we could get some new tags added? In addition to the slew of new anime created since the last modification, I'd like to see a tag dedicated to original artwork, like shikishi and artwork done at conventions. As it stands, there's no way to look this up with a tag, unless it's organized under a specific anime title. For those of us who own lots of sketches, it's not feasible to break it down per title. Thanks!