Just don't copy / paste articles or content without referencing the source, otherwise you'll get banned for plagiarism.
Is it a one-time bannable thingy?
Yes, a permaban is applied whenever plagiarism is caught in a user's contents. It's good to refer to the original source from where it was taken (or if it was from a user here, you should ask them and take their permission before posting their content).
@OP,
If article belongs to BTC or any news related to the same, you can post them in the "Press" board of the forum:
https://bitcointalk.org/index.php?board=77.0If the content is country-specific or based on a different language or country, you can check the languages on the main page and refer to the PR section of that board. Please remember that you should also write something in your own words before you put the content of that article, as well, please add the source.