Anyone heard of/used Voice over IP devices?

[IBuySouls]

Was looking around creative's site here and came across the VoIP blaster. Anybody use one of these things before. If they work okay I was thinking of getting one for me and one for my parents then I'd have free home phone calls for all of university, sounds decent to me! Thanks

 

[Mytv]

Yeah there are lots of software programs that can let people speak over the internet for free.


Here's a list
Also netmeeting from microsoft
Another program