I feel very passionately that it doesn’t take very much effort to find the source of an artwork. As I said in my post, it only took me three seconds to find the source. I’ll assume the benefit of the doubt, that you aren’t aware why sharing artwork without sourcing is so bad. Here’s why I feel so strongly that it should never be done, to the point that I was “harsh” about it (which I am not denying in the slightest):
Sharing work without crediting the original artist is extremely disrespectful. Many very good fanartists take their work down completely because they see their art being shared without their permission. It’s not fair to the people who put their hearts into making free, beautiful art for people to look at, and it’s not fair even to the people who might want to see more of the artist’s work.
Please don’t forget that on pixiv, having people favorite, bookmark, and rate the work can contribute to the artist’s renown and income. Someone who doesn’t post a source is denying them that right. This is especially true for Japanese fanartists, who are fully able to make a living off their fanart, though the vast majority of them struggle to make ends meet from that work. Also, Japanese law about copyright infringement is REALLY strict, and to have people willy-nilly reposting their things without asking, getting permission, or even notifying them is a massive cultural no-no, and is (again) responsible for many fantastic artists removing their artwork from the Internet, which nobody wants!
Also, posting art without a source, regardless of whether it’s easy or whether it’s right, is in a gray area of the law. Copyright law (link to World Intellectual Property Organization) holds that the creator of a work has intellectual property over it, and should always be credited for the work.
The artist that you reposted work from has actually enabled sharing! You can see that in the red box:
This means that they ENCOURAGE people to share their art–with a link back to their pixiv page. This helps them, and everyone still gets to see the artwork.
If you think finding a source is difficult, I’ll show you how I did it so fast. Just download the Chrome add-on “SauceNao.” When you see an unsourced image on your dash like so, just right click:
like so, and you have four different ways to find the source of that super cute artwork you found! Or if you’re in another browser, just go to saucenao.com and paste in the url, they can always find something on pixiv.
Thing about it in another term: you wouldn’t read a fanfic you liked, then copy/paste it into your tumblr and say, “Dunno where this is from but it’s great!” If I found out someone did that with my writing, I’d be furious. It’s illegal, it’s immoral, and it’s rude.
So that’s why I was harsh about finding a great pixiv artist unsourced on my dash. I feel very strongly about this issue, and while some people may say that we give up our rights to something when we put it on the internet, I don’t agree. We as a civilization are worth more than that.
I hope you also have a good rest of your day/night.