The outage of internet telephone service Skype last week helped several companies, including apparently the Gizmo Project and Grand Central. The latest company to say it benefited is Jajah, which claims users registrations surged by 50 percent more than usual when Skype was down last weekend (though it didn't release specific numbers)
[Update: Jangl, another VoIP provider for consumers, saw a 30 percent jump to 7,000 users on its Facebook application, Phonebook, up from 5,500 during the same time-frame.]
Jajah also plans to release an application for Facebook, sometime over the next couple of weeks, allowing Facebook's 31 million users to make free (if the other person is registered, and living in certain countries) or low-cost Jajah calls from within their Facebook profiles.
To use the app, you select the person's name and click “call,” without knowing your friend’s number and it keep yours private. Jajah calls your phone, you pick up, and it connects you with your friend.