Juno- Free email and small charge if you want an account that can accept attachemtnsd and browse the web.They announced that early 2000 the whole service will be free. Check the site.
Netzero- Free internet access and email. The only minor problem is an advertising banner that stays on the screen all fo the time. It can be moved around. Since the advertisers are paying, its free.
Worldspy.com- Free internet service- no advertising, no catch. ( What's the catch??)