>> I use GrandCentral too. But the underlying service that is
>> actually calling out (including to landlines) is Gizmo. And it
>> costs money unless you are an "active" user.

If you use the GrandCentral web interface to do your calling out (by going to the address book and clicking "call" next to one of the entries there, or using the GrandCentral dialer application, see http://www.internettablettalk.com/fo...ad.php?t=18802), then GrandCentral calls your Gizmo account, then calls the landline, then connects the two. So as far as Gizmo is concerned, it's totally free. I've been using it for months and I've never paid a cent.

>> Can someone who runs both skype and gizmo on their NIT give us a comparison?

I've used both, but I don't have much interesting to report. As far as call quality is concerned, they're both quite good for me. Skype seems to be a little less resource intensive for me, that's really the only difference. Since I realized that you can use Gizmo with the regular built-in Internet Call application, though, I don't run either Gizmo or Skype, I just let the build-in application log in to Gizmo for me and receive my calls that way.