Apparently, this happened yesterday but I just found out when I logged in to my google account.
Google voice now lets you call US & Canada phones for free for the rest of 2010.
Like I (we?) needed another reason to love Google!
International calls can be placed at “insanely” low rates, although it does look like they’re comparable with skype rates.
There really is no reason to pay for phone services if you have internet
Here’s a good article covering the details