I only pay a dollar a month for long distance, so I haven't given up my long distance carrier. I need my landline for DSL, but, the day naked DSL comes to Chicago, I'll have to give it serious consideration.
I used to limit my long distance calls to Sundays when the rates were lowest. Then I got Skype and made calls when
I needed to talk at just 2¢s ($.02) per minute. Now I call whenever I feel like talking to anyone in the U.S or Canada, at least until December.
I make most of my calls from my laptop. It's not as convenient as a cellphone, but it works for me. Just try taking notes and doing research, while recording the call from a cell.
Googles GTalk just added voicemail capability and it works. You can send voice messages to any Gmail account whether or not they have the GTalk client. The only problem I have with it is that there isn't a Mac client, so if your in a mixed (Mac/PC) relationship you can text chat, but only one of you can send voicemail.
Yes, I know Skype offers voicemail and has clients for both platforms, but Skype's voicemail isn't free and Gmail is everywhere.
Between the two platforms even a whisper can be heard around the world.