This isn’t against the rules of the forum, but I personally don’t think you’re doing yourself any favors by specifically advertising material that forum members, those whom you regularly interact with and learn from, can’t actually get access to without forking over their email address.
Unless I’m misunderstanding @PFGeeks’s point, he wasn’t criticizing your decision to use that material as bait to help build your email list. That stuff happens all the time. His point (and one I would agree with), is it’s not in good form to post about that HERE, specifically advertising that content, and making no mention of the subscriber requirement in your post. It comes across as a tactic to help increase your pageviews once again for the next month. You may not have intended it to be one, but your post here comes across as purely an ad.
Ignore this critique if you’d like. It’s your call.
Congrats on all of your success with blogging.