Want to make a call to another Twitter user using your landline or cell phone? Well Twitter is currently beta testing [email protected], which will allow two-minute VoIP calls. The beta version is only by invitation, so you need to check your account to see if you received an invitation or not.

This Tweet blurb further states:

Putting the talk in Twitter

JAJAH gives short messages a voice. With the new JAJAH application, Twitter users can make free phone calls on their favorite microblogging service. Now in Beta, [email protected] allows you to make a free two minute call (the verbal equivalent of a tweet) to other [email protected] users. It’s free, it’s easy and works no matter how you use Twitter, whether it’s on your cellphone, via Seesmic, TweetDeck, or any other way.

The Beta is available to selected users. To check if you’re one of them, log in to your account. Under “My Services” in “My Account” page you will see “Twitter Calls.” If this doesn’t appear, and you would like an invitation, send an email to [email protected]

How to use [email protected]

To make a call, simply send a tweet with

“@call @twittername” where “twittername” is the username of the person you wish to call. Your phone will then ring and the call will be connected. All contact details will be kept private, so you can use [email protected] without giving your phone number away. For the call to be successful, both you and the person you wish to call must be JAJAH members.

Let other people know they can @call you: send a tweet “call me free – reply with @call”. Or add “[email protected]” to your account info so people will know you are part of the beta. To protect privacy, calls can only be made to people who follow you.

No headset, no download, no software, no hidden costs. Use the phone you already have.

Seems like Twitter is going to be expanding just as fast as Google has. Being able to send free calls is going to be extremely popular for all of those who use Twitter.

Comments welcome.

Source for Twitter free calls.