Lately, I've been soaking up a bit of time learning email marketing, and from what most people advise is that the aim is to keep your subscribers "warm" by: 1) Staying in regular contact i.e. emailing at least once a week 2) Writing valuable/useful content and; 3) Occasionally offering that related affiliate product Now I understand the concept, but how do I make a long-term income from a list where a subscriber signs up for a newsletter to a specific health problem? For example, a free mini-course attached to sales letter for a hemorrhoid cure or yeast infection. Surely, most subscribers would have fixed their problem within 3 months. And so, how do I keep these subscribers warm so I can make money from the list month-after-month? It's not like the internet marketing niche, where a new MMO online is launched every week - making the gurus' rich. I still have to pay Aweber each month no matter what! What do you think?