The social media service has organized a set of special hashtags to help followers communicate and search for the latest updates concerning the earthquake. It has also opened up an earthquake section on its Japan mobile site ( that posts links and up-to-date tweets for mobile users. Here's a list of the most popular hashtags:

#Jishin - General earthquake information

#J_j_helpme - Requests for rescue or other aid

#Hinan - Evacuation information

 #Anpi - Confirmation of safety of individuals, places, etc.

#311care - Medical information for victims