Got WiFi , use Truphone for FREE

Use Truphone free till 31st Dec 07. Make international calls to 40 countries for free, if you sign up before 30 Sep 07.
Just called my bro in Australia (on his landline) for free.
You can even call GTalk friends on IM, thats also free.

Here's the link.

Be careful, just have a look at the list of countries first , I just called my wife (local call) and India is not in the list , got charged 0.148 $. But that was ok coz as soon as you register they credit your account with 2$.