Ad Swap

n. Ad Swap: When two groups or events swap advertising without any exchange of money.

An advantageous ad swap opportunity exists where two annual conventions of a similar size are close enough to one another that people who attend one convention might consider attending the other. Each convention will give the other a full page ad in their Program Book. Once an ongoing ad swap is in place, you might lose track of who came first, but as long as you keep going it doesn't really matter.