>Have seen Skype mentioned here several times, starting a dedicated thread.
>
>I just did a fairly quick (~10 minute) search online and was overwhelmed with information. What are the most important things to keep in mind? Some specific questions I have are:
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>Do you have to be close to a computer to make calls?
>
>What is the sound quality and responsiveness like? I saw someone mention delayed transmissions, "like a satellite interview."
>
>What is the real cost?
>
>What kind of phones can you use? What phone features are most important?
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>Do you use a new phone number, an existing number, or your choice?
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>Is Skype a replacement for either a land line or cell phone, or a cheaper additional option?
>
>Etc. etc. etc. All info appreciated.

We've been using Skype since late 2006. Overall we've been pretty happy with it even on our crappy wireless broadband connection.

It works through your computer sound card, so you do need to be near the computer.

We've also subscribed to MagicJack http://www.magicjack.com/2/?mid=304185. This is a device that hooks to a USB port that you then hook your regular telephone into (or jump to your household wiring like we did). Works very well. Still cheap, and it gives you a local phone number for people to call.