Jeff Pulver is generously providing free calling to the USA and Canada for the holiday season:
This is very cool. Way to go Jeff.
Get yourself a SIP phone and sign-up for FWD. You can use a soft-phone, but frankly, PC’s don’t make very good telephones (they’re kind of heavy to carry around the house). You can get a real SIP phone for as little as $65 or get a SIP Telehpone Adapter for $72 and use a regular household phone (e.g. a cordless).