Although I cannot comment on the case in hand as I have not received any documents or notificaton related to it, I will speak to how sites like this are protected.
A forum is a an interactive computer service, much like YouTube and blog hosting sites.
As such, we are covered under Section 230 c
"No provider or user of an interactive computer service shall be treated as the publisher or speaker of any information provided by another information content provider."
The site user is responsible for the content they publish, not the site owner unless the site owner publishes it or does not take action when alerted to copyrighted material.
With that being said, it is against the site rules to post any copyrighted material here.
To post a link to an article is ok, to cut and paste the whole article most likely is not. To cut and paste a relevant portion of the article for discussion may be OK under the fair use act, but these days I wouldn't do it. Those that post whole articles may be fair game to this type of legal action even if it has a link back and credits the articles owner.
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