
* Instant messaging to Skype and MSN (free)
* Calling to Skype users (free)
* Calling to MSN users (free)
* Check and set facilities for Twitter (free)
* Check and set facilities for Facebook (free)
[source]
Even without the landline call feature, you can still use Truphone to make calls through Skype and MSN. The service also acts as an IM, and a conduit for Twitter and Facebook updates. The app is completely free. All you need to do is purchase their mic, which will be available soon.

