Of course their moderators will limit what they will allow to be posted on their forum. More than likely, a moderator felt your article was considered to be SPAM. That's precisely why independant forums like HOFO are out here on the internet. This is an excellent site for advice and/or questions.
Such subscriptions can be blocked and/or removed by CS per customer request. It's sad if you were not offered those options.
If you do a search here or many other internet forums, the topic has come up many times and debated many ways. I am not defending At&t or any other carrier in this case, just trying to offer a suggestion for you.
If I'm annoyed and you're annoyed, does that make us a paranoid ??
Sarcasm is a fine art...
"Don't believe everything you think"
It's not a matter of if you win or lose, it's how you assign the blame