If you take an apple from someone else’s tree and share it with others, it doesn’t matter that you pretend nothing or don’t want merits, you still stole it. And the web is not like the wilderness: everything is „planted“ by someone and belongs to someone. In this case you stole from some staff members and some more.
You normally need to ask for permission to share others‘ content, but the very least you must do is to name the source. Don't forget this here from now on.
"Within the four seas, all men are brothers" Shuihu Zhuan