Skype Vs. SIPphone - VoIP Compared
JimLynch writes "There are few organizations more loathed than the telephone company. Let's face it - none of us like forking over our hard-earned cash every month just to use the phone. Well, how much would it be worth to you to be able to call your friends and family for free by using the Internet? ExtremeTech have compared the two newest ways to call friends via the Internet: The SIPphone from Lindows' Michael Robertson vs. the Skype service from the developers of Kazaa."
To get good results using VOIP you need some sort of high speed internet access, which cost considerable more than just basic phone service.
Of cource you could use dial up!