Chances are, this person likes your e-zine and will refer it to friends, and if their ad gets a good response will be back for more paid advertising. Each newsletter would have to include the name and subscribe address of the four other newsletters in their group with the other ads coming from the network. This will also increase subscribers to all of the newsletters. I know advertisers will pay this, I was in a program similar to this. There aren't many newsletters that offer that rate.
Any feedback is appreciated.
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