After putting a ban on its SMS service in numerous countries back 2008 and early 2009, Twitter appears to be restarting its service country by country. The lucky country to get back the service now is Jordan as our fellow blogger Gaith reports at ArabCrunch. The ban was placed back in 2008.
The service appears to have been enabled with a possible collaboration between Twitter and Zain, the largest mobile operator in the Arab region. Other countries including Kuwait [Zain] and Saudi Arabia [with STC] have also been given access to the text messaging service. I haven’t seen or tried this personally but from the screenshot and the report it is confirmed that the service has been reactivated.