Skypephone:
Pros-
Cool hardware.
Pay one year for what conventional service would cost for 1 month.
Call Pc's
no telco's to deal with
Cons-
only works in wifi coverage (at home, office, downtown, neighbors house)
Not great if your car breaks down on the highway or you are stranded in the woods
$200 for the phone
quality slightly lower than standard cells. (from what I've heard)
_
Bottom line: If you live in a wifi crammed area, and want cheap cell service (skype in and out are about $15 a year each) go for it.
I think they should include a mini standard cellphone antenna so if you absolutely NEED to make a call, you can do it for a nominal fee.