I think the biggest disconnect I see with this is that few people use Twitter as a synchronous one-to-one communication tool. It's used as an asynchronous one-to-one communication tool, and as a synchronous one-to-many / many-to-one communication tool. But the Jajah offering seems to be forcing a technology into a paradigm that isn't built for it.
i dont think it will be used to call friends/family.. on twitter you can essentially follow anyone.. it will be used by people who dont want to give away their numbers...
I'm having a really hard time seeing the brilliance in this.
First off, the barrier to entry is -huge-. Both people need to have accounts on both services. That's four accounts for one call.
Secondly, it's allowing you to activate a service via Twitter that should already be easy to do. If it's hard to make a call on Jajah to another Jajah user, they're doing something wrong.
Third, Twitter isn't a command line. I don't type things into Twitter that I want to do. It's a simple, many-to-many communication channel. This doesn't fit in to the way people use ( or don't use ) Twitter currently.
just to give you an example.. all the big dating sites (match.com/eharmony.com) have a secure calling service and they charge money for a user to be able to use it...
now on twitter which is again a social site, you can do that without giving much away.. and see how it goes.. before actually going on a date and exchanging real numbers..
