Seems like he was only posting helpful annoucements, it's not like he was deceiving people with stolen content. A perm ban seems unfair imo.
I agree, I would think a commercial service would not mind that their announcement is being disseminated, even "plagiarized." Isn't that what going "viral" is all about? The only thing that they would have issue with is if the person modified the links to direct to a phishing website or other scam.
However, it appears that the post that was actually reported was not an announcement but a direct copy paste of another user's brief analysis.