Singapore Civil Defence Force
http://twitter.com/SCDF
REACH Singapore
http://twitter.com/reach_singapore
Starhub
http://twitter.com/StarhubCares
Singapore Police Force FAcebook page
http://www.facebook.com/singaporepoliceforce
George Yeo (in personal capacity)
http://www.facebook.com/georgeyeo
http://www.beyondsg.typepad.com/ (guest blogger)
Ministry of Health blog
http://mohsingapore.blogspot.com/