It used to be, when an organization wanted to get their message out, they had to do some print advertising or radio or TV advertising.
Today, there are so many more ways to communicate and those who rely upon just one, are seriously limiting themselves.
Just as an example, there are people reading this message on the my blog at www.lawrencefine.com/blog, others are reading it via email (www.lawrencefine.com/blog/subscribe to sign up) others are reading this via RSS feed and others are reading this on twitter. If this message was only available using one method, it would limit the readership.
When you only make your information available using one or two methods, you are lessening the likelihood that it will be seen.
Expand your communication channels and let people hear your message!
Have a great day!