I've been checking images with zero arrtags and valid sources for some time now and I found out that artist info from the source url is often very imprecise. For instance, any image from sweetnote.com auto-defines as azumaya_(pomupomu_purin), despite the fact that the source url in artist's wiki is http://www.sweetnote.com/board/azumaya/. This isn't the only case. Is there any way to fix it?