My Facebook feed is littered with Spuffy and BtVS pages, because I am that sad. One of those I joined most recently has taken to posting a lot of images, banners and manips, some of which are oddly familiar.
The first I spotted was slaymesoftly's header. I commented on what it was and pfft! it vanished.
Next was a recent piece of work by comlodge. I commented on that and this time the page owner agreed that her work is excellent - but it's still there.
Just now it was a banner for a story by alwaysjbj.
There's a lot of art there that I recognize but can't recall the artist. Damn! This is what I hate about Facebook (and Pinterest and Tumblr for that matter). People just crib things at will with no thought of giving credit. Someone posted one of my drabbles on Tumblr and it never occurred to them to either ask me first or credit me as the author. Luckily, I made a fuss and they took it down.
I really can't see the majority even thinking of asking permission to repost - just as I wouldn't think of asking the author's permission before I lend a book to a friend - you publish it and it becomes public property. However credit might be nice, like the author's name is on the front of the book.
But people just collect together things they like, and then share them because they like them - if you are an artist the answer is, like the artists of old, to sign your work on the front where it can be seen.
I have some icons that I got from Fanpop.com and didn't credit but I suspect that they were reblogged to begin with and so whoever posted them wasn't the creator. That's the problem with sites like that so I try to stick mostly with ones I make or find here on LJ and know who created them.
I confess I do collect gifs off tumblr without crediting, and my bad about that. Now I have hundreds and have no way of finding the original sources now.
With the examples gillo found - those seem pretty blatant though. People aren't usually reposting on LJ without crediting that I've seen; but I guess that's the nature of LJ and the folks who will tend to gravitate towards it?
In some instances they are NOT clueless at all though - they know perfectly well, they've been told more than once (I'm recalling an experience on a forum I was on the mod team for) and they insist on doing it anyway because...they want to, basically.
That's not plagiarism, it's outright copyright theft.
I realise that in practice that if you put stuff on the web, people are likely to pinch it, but they should get permission before reposting anything that they didn't create themselves. I know that a lot of people don't bother and sites like Tumblr and Pinterest positively encourage bad practice, but it can come back to bite them on the bottom.
Oh, dear. Some people have a huge sense of entitlement and are totally clueless about copyright law and common politeness. Most amateur artists/photographers are perfectly happy to share if asked nicely. She's lucky no one sued her.
Good for you for bringing it up! I'm sure the original creators appreciate it.
We're doing this work for free - and admittedly using copyrighted material (tv shows etc) as our own sources, so fair use and all that jazz. So the only "payment" we can offer each other is appreciation and proper credit. That's coin of the realm for fandom works.