Posting useful and valuable information on a forum thread related to your niche is a great way to not only get more subscribers for your newsletter but recognized as an expert in your field. Do take note of forum rules and abide by them religiously otherwise you may get banned from participating.
I highly recommend you checking out the War Room on The Warrior Forum. There is a one time fee of $37 to join The War Room, but you will find a ton of valuable information there…..many products for FREE.
To sign up for the War Room follow this link: http://www.warriorforum.com/payments.php