You can't use skype without an internet connection, for which you need a landline even for ADSL (& Cable I think). One of those Chicken + Egg situations!
I used a landline still, mainly as its more convinient (cordless phones etc...) but I'd use Skype in principle.
I'd put money on it that we have a single network pipe to our house that does VOIP (phone), Internet and On Demand TV services in less than 10 years. That will be fun
You can't use skype without an internet connection, for which you need a landline even for ADSL (& Cable I think). One of those Chicken + Egg situations!
We don't have BT over here, just Cable & Wireless, so my answer has to be SkyPE.
It's very useful for support calls to the USA, I just wish they would implement SkyPE at their end then it would be free, and you wouldn't mind being left on hold for 15 minutes!