1. Swap sponsor, feature, classified or solo ads.
Use your unique selling proposition to create ad copy for these swaps and also in all your promotions for your ezine.
2. Swap "thank you" page ads.
Promote other ezines on page your new subs are taken to after filling out your subscription box or form in exchange for those publishers doing same for you.
3. Provide a bonus for subscribing to your ezine.
Increase value people place on your bonus by posting testimonials for it, telling people how much it would be worth if you were to charge for it, or by telling them how many people have already received it.
4. Submit your ezine to ezine directories.
Get your ezine listed in as many of these directories as you can. This will increase your subscriptions and also has added benefit of helping you to find more new advertisers and also other ezine publishers who would like to swap ads with you.
5. Submit your ezine to ezine announcement lists.
Many ezine announcement lists will allow you to submit an announcement for your ezine on a weekly or monthly basis at no cost, giving you good ongoing promotion of your publication.