Free and Reduced Cost
Internet Service Providers

Address.com
A free provider, doesn't support MAC users.

Altavista
Free access with advertising banners.

Bluelight.com
A joint project between Kmart and Yahoo, bringing you free Internet access, with an advertising banner.

FreeNSave.com
Free isp with free pornography filtering!

Freei.net
A free provider with a good list of local access numbers.

Free Web Canada
I haven't tried this one, but it is the first free access company in Canada.

Juno.com
Free  Email Provider + limited net access

Netzero.net
A long time free Internet Service Provider.

ISP800.com
Not a free provider, but it is cheaper than most. The big plus is that it is alway a toll free number from where ever you call. Great for travelers within the U.S.

ifreedom.com
A free service. You get an advertising banner, then you click on it, then you get to surf banner free for 20 minutes.

Worldspy.com
A provider that offers free service without advertising bar.