If you share the work of others, it’s your duty to make sure that the creators of that work get proper credit. Crediting work in our copy-and-paste age of reblogs and retweets can seem like a futile effort, but it’s worth it, and it’s the right thing to do. You should always share the work of others as if it were your own, treating it with respect and care.
When we make the case for crediting our sources, most of us concentrate on the plight of the original creator of the work. But that’s only half of the story—if you fail to properly attribute work that you share, you not only rob the person who made it, you rob all the people you’ve shared it with. Without attribution, they have no way to dig deeper into the work or find more of it.
Austin Kleon's blog, January 27, 2014, via Mashable on Twitter. Wonderful attribution matrix--what it is, who made it, and when, why we should care, how you found it, where we can find more things like it. These are all good notes to put in our Diigo description of bookmarks, I believe.