Sign up for K7, the world's leading web-based unified messaging system that channels your free voicemail and fax messages directly to your e-mail. K7 Unified Messaging provides you with a free phone number. This number enables you to have your voicemail messages and faxes delivered directly to your computer. You also have the option to view and listen to your messages right on the K7 Web site.

http://www.k7.net

When people call it, they will get your "voice mail" and then the message will be fowarded to you email. I tried it and it actually works! I thought it would be good for entering contests and things. It might be useful even when giving out your number offline