Jaxtr is a free service that brings voice to social networks and blogs. It focuses on consumers with online profiles. Users can link their phones with their online network to hear from callers worldwide while keeping their existing phone numbers private and giving them control with the people they meet online.

Jaxtr reported 5 million registered users in 5 months since July 07. This makes Jaxtr the fastest growing Internet communications service in history ahead of Skype, Hotmail and ICQ. Out of the huge user base 85% are international users and only 15% are North American.

What’s Jaxtr’s Viral Strategy: It’s an email signature calling links (send messages to all your address book contacts). Something like
I am using Jaxtr, and if you also sign up, we can talk for free on the phone at any time.
-Sender

P.S. Here is the link to sign up:
http://www.jaxtr.com/user/ticket?n=T10ftmmlt9×5oc&type=joininvite&eb=87

My Assessment:

• The large number of international users Vs US users shows that growth is driven by Free Call messaging which has a huge appeal outside US
• Jaxtr sends emails to all the contact listed in the address book

I am not convinced about the existence of demand for Jaxtr’s service and this can be seen by fewer uptakes on their Facebook app.

We are excited about the possibilities of OpenSocial, especially the ability to reach audiences in LinkedIn, Orkut and Hi5 networks. Facebook was able to expand target segments by going open and putting LinkedIn under severe pressure. We’ve always been enthusiastic on trying different distribution channels, we were the early ones to adopt Facebook, widgets and instant messenger plug-ins. Our development team was excited about unleashing their skills & creativity but its business possibilities fascinated me. We feel that Internet is fragmented; unlike Television, it is not confined to channels and it is important to reach-out to users using multiple access points and destinations sites. I am also waiting for the day when data could be portable between social networks and not just aggregation of data in one destination.

I am sure, OpenSocial will make the web more interesting for users and the movement towards opening up of socialization will continue!