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Learn the definitions of words before using them.

Plagiarism is the "wrongful appropriation" and "stealing and publication" of another author's "language, thoughts, ideas, or expressions" and the representation of them as one's own original work.

You didn't always attribute ownership of the material to its rightful owner. I believe you made numerous posts in the past using the deceptive username, using a logo copied from the other web site, and not clearly stating that you have no affiliation with the other web site. That is plagiarism.

Not doing this, not doing that, how convenient.

How about always linked to source and never claiming credit for it?

So it WAS plagiarism according to you 6 months ago ...