The main reason I’ll stick with Skype? They have one key element that Gizmo doesn’t yet offer, and that’s a mobile client.–NOT TRUE– Try
http://www.osnews.com/story/12048/Gizmo-on-a-PocketPC-via-the-SJPhone-SIP-Client
It works like charm

I came accross this web nugget today. Apparently it is possible to use Gizmo on a Pocket PC by using SJPhone. Perhaps there is hope…

And there I thought your preferred mobile device was running the Tablet Edition OS, Kevin…

Since Gizmo uses the standard sip protocol which means that you can use some SIP devices like Asterisk and in my case the Zoom V3 firewall/handset interface (so I can use my wireless phones with Gizmo and don’t need to have a computer on 24×7).

The gizmoproject forum has a couple threads on different windows mobile apps that work with gizmo in case anyone is interested.

I find Gizmo a nice workable product as a replacement for my 2nd phone line and saves me a whole bunch of money per month. Although I mostly do Gizmo to land line communications.

I gave Gizmo a try today, and the quality is superb. I’ve already referred about a handful of people to it, so it’ll definitely be useful if the service holds up to its promise.

Skype on the other hand, has the better coverage and access, plus their software is better, however free is just too much to ignore. I’m more than willing to sacrifice some convenience and quality for a free international voice calling service.

Although I still advocate Skype for PC-2-PC calls.