For the first time, Twitter changed color: Its layout turned red and those who used #red or #worldaidsday saw their tweets go red. Meanwhile, Facebook encouraged users to have their profiles don red avatars.
That’s what happened on World AIDS Day 2009, in support of (RED)’s campaign to raise awareness about HIV/AIDS in Africa. The following year, a world map developed by Ushaidi and (RED) went red for every tweet that included #turnred.
So what would it be this year?