The great thing about conference calls is that they can be recorded for future use. An audio, video, or web conference is not a one-time only event.
You can make previous conferences available to your staff as a teaching/learning tool. If someone was out the day of the conference they can still catch up by listening to/viewing it.
And you can also make them available to customers to inform them and market your products and services. You can create a library of past conferences and make it available on your website.
These conferences can also be mined to data. No one can remember all that took place during a teleconference and if you were the one moderating the conference you’ll remember even less than others. So go back, listen, and take notes that you can use in the future.
Your Marketing and PR departments can also use these conferences for sound bites and media-friendly quotes that can populate press releases, brochures, and other marketing materials. Just be sure the clear it with the individual you want to quote. If they work for your organization, this probably won’t be a problem. If they are from outside, you may even want to ask them to sign a release beforehand and then just let them know later what quotes you’ve decided to use.