Pinger is a new web service, which allows you to send an audio message over your cell phone. The receiver can hear your message as an audio e-mail, over the web or on the phone. It is very easy to use, just sign up for a free account and add your contacts to the address book. Once you are logged in, click on the help link at the top for directions on how to send a message over your cell phone, regular phone or over the web. Have fun1 
 
Go to YouTube to watch a demo on Pinger.