Here I will offer more advice, for those who have started an opt-in list and have failed, you can rejuvenate your failed venture. For those who are starting, here are three quick and easy ways to build a profitable opt-in list.
1) Get your customers to trust you and your products first. Just launching your opt-in list would not make you an expert and a believable seller. Put many articles first before you start an opt-in list. Write about the topic you know and have started and used for your site. Try to put forums first to gain knowledge about your customers about their wants and needs and target those wants and needs.......

Topics include:
* 4 Crucial Things You Need To Do To Build your List
* 4 Ways To Get Your Opt In Subscribers To Trust You Quickly
* How To Build A List Of Eager Subscribers
* 7 Ways To Make Money Using Nothing More Than Your List
* many more

You also get the Private Label Rights License Terms:

[YES] Can be edited.
[YES] Can put your name as the author.
[YES] Can be broken down into articles.
[YES] Can be used as web or e-zine content.
[YES] Can be added into membership sites.
[YES] Can be sold in any format.
[YES] Can be packaged.
[YES] Can be offered as a bonus.
[YES] Can be given away (in any format).
[YES] Can be sold on auction sites.
[YES] Can offer (Master) Resell Rights.
[YES] Can resell Private Label Rights.
[YES] Can be published offline.