As if all this twittering and tweeting wasn’t enough, now Twitter has teamed up with Jajah to provide voice calling for users for free! This service which is presently in Beta stage offers calls for a two minute duration only, during which it will analyze the conversation. The two minutes bar is perhaps because this is the equivalent time for a which a text tweet lasts. Users need to have a Jajah account and follow each other in twitter to avail this facility. The service will work on any Twitter enabled device be it a PC, laptop or even a Smartphone. With this service users will be able to keep their phone numbers private and yet have voice conversations based on screen names. This is so good news next up is Video conferencing.