As twitter has become a massive player in the internet and social media world, it only seems logic to enable you to have a bit more features than only allowing 140 characters. JAJAH puts the voice into twitter, and for FREE.
JAJAH has launched a new product JAJAH@Call, that allows you to make short phone calls to your twitter friends, without needing to know their phone number and give out your phone number. you can only call friends that follow you in order to protect your privacy. I actually think that this is the most important feature since you don't need to revile your phone number to twitter friends.
JAJAH@CALL is very easy to use, all you need to do is type : @call @userName and you will receive a call to your pre-defined phone number in your JAJAH account. There is no need to download anything, just use twitter as you always do.
This product is currently in beta and for a small number of users. Unfortunately only users with US numbers can use this service (at least for now).
For more info, please visit this link, and watch the below video