http://wired2cash.com/mikedillard?p=45
Be sure you always track your ads to be sure you know what works and what doesn’t. The same thing goes for if an ezine has 50,000 subscribers and they only charge $10 to place an ad, this means the list is not as responsive. But if they charge $100 than you will have a better response. This is not always the case but it is a good guide to follow when selecting an ezine.