Quote from: zasad@ on Today at 08:20:20 PM

It is forbidden to pass off someone else's text as your own - this is plagiarism.
This does not apply to pictures.

The plagiarism rule doesn't apply to pictures because the picture itself contains evidence of its origin. If I were to post the below image, I am not trying to misrepresent it as my own creation. If you quoted my post, you would see this link that leads to where I got it from.

The only way a post like that could be a case of plagiarism is if I said something like: how do you guys like this funny strip that I created today?
There were cases where members posted stolen content in the Bitcointalk 10 year anniversary art contest and those are obvious cases of plagiarism no matter how they were acted upon by the administration.