Yeah I warned him that what he is doing is not the right way. Looking now at his post history, seems like he did use quotations properly from time to time, so I guess he either became lazier, or simply wanted to appear more knowledgeable than he really is and squeeze more merit.
I'm very interested in this case as well, is the ban plagiarism or because of too much low quality posts (links from article).
Wouldn't he first get temporary ban, if its because of low quality posts? Since he got perma banned, I guess he forgot to include links for some of his topics
My problem with people copying article and posting on the forum frequently is that they become addicted to doing so just because one or two topics were merited and when this continues, they end up always delivery very low quality posts which isn't hygienic to the forum.
Pretty much this; they get merit couple of times, and then they start doing all kind of shady work, skipping using proper quotes because then it would be obvious they just copypasted majority of the text.
One of the examples of that is his topic
Privacy while making use of Bitcoin for which he got ~40 merits. At first look it seems like he wrote that topic using his own words as there are no quotation marks whatsoever, while there are some reference link at the bottom. If you check it bit more thoroughly, it is obvious that topic is a combination of his own words, paraphrasing and direct copy/paste, but it's mixed up all together in a way that it looks like his own words. So no wonder that he continued with that practice as he saw it works and brought him tons of merit for not too much work.
edit: @lovesmayfamilis thanks, sorted.